diff --git a/packages/asset-buyer/src/index.ts b/packages/asset-buyer/src/index.ts
index 37206e672b..42f1f58ae5 100644
--- a/packages/asset-buyer/src/index.ts
+++ b/packages/asset-buyer/src/index.ts
@@ -32,6 +32,8 @@ export {
     SwapQuoteExecutionOpts,
     SwapQuoteInfo,
     SwapQuoteRequestOpts,
+    MarketBuySwapQuote,
+    MarketSellSwapQuote,
     LiquidityForAssetData,
     LiquidityRequestOpts,
     OrdersAndFillableAmounts,
diff --git a/packages/asset-buyer/src/quote_consumers/exchange_swap_quote_consumer.ts b/packages/asset-buyer/src/quote_consumers/exchange_swap_quote_consumer.ts
index bf705a4fe7..b0b678cf2d 100644
--- a/packages/asset-buyer/src/quote_consumers/exchange_swap_quote_consumer.ts
+++ b/packages/asset-buyer/src/quote_consumers/exchange_swap_quote_consumer.ts
@@ -8,6 +8,9 @@ import { constants } from '../constants';
 import {
     CalldataInfo,
     ExchangeMarketBuySmartContractParams,
+    ExchangeMarketSellSmartContractParams,
+    MarketBuySwapQuote,
+    MarketSellSwapQuote,
     SmartContractParamsInfo,
     SwapQuote,
     SwapQuoteConsumer,
@@ -20,7 +23,7 @@ import { assert } from '../utils/assert';
 import { swapQuoteConsumerUtils } from '../utils/swap_quote_consumer_utils';
 import { utils } from '../utils/utils';
 
-export class ExchangeSwapQuoteConsumer implements SwapQuoteConsumer<ExchangeMarketBuySmartContractParams> {
+export class ExchangeSwapQuoteConsumer implements SwapQuoteConsumer<ExchangeMarketBuySmartContractParams | ExchangeMarketSellSmartContractParams> {
     public readonly provider: ZeroExProvider;
     public readonly networkId: number;
 
@@ -44,9 +47,20 @@ export class ExchangeSwapQuoteConsumer implements SwapQuoteConsumer<ExchangeMark
     ): Promise<CalldataInfo> {
         assert.isValidSwapQuote('quote', quote);
 
-        const { params, to, ethAmount, methodAbi } = await this.getSmartContractParamsOrThrowAsync(quote, opts);
+        const consumableQuote = (quote as any) as (MarketBuySwapQuote | MarketSellSwapQuote);
+        const smartContractParamsInfo = await this.getSmartContractParamsOrThrowAsync(consumableQuote, opts);
+        const { to, methodAbi, ethAmount } = smartContractParamsInfo;
+
         const abiEncoder = new AbiEncoder.Method(methodAbi);
-        const args = [params.orders, params.makerAssetFillAmount, params.signatures];
+
+        let args: any[];
+        if (utils.isSwapQuoteMarketBuy(consumableQuote)) {
+            const marketBuyParams = (smartContractParamsInfo.params as any) as ExchangeMarketBuySmartContractParams;
+            args = [marketBuyParams.orders, marketBuyParams.makerAssetFillAmount, marketBuyParams.signatures];
+        } else {
+            const marketSellParams = (smartContractParamsInfo.params as any) as ExchangeMarketSellSmartContractParams;
+            args = [marketSellParams.orders, marketSellParams.takerAssetFillAmount, marketSellParams.signatures];
+        }
         const calldataHexString = abiEncoder.encode(args);
         return {
             calldataHexString,
@@ -59,22 +73,45 @@ export class ExchangeSwapQuoteConsumer implements SwapQuoteConsumer<ExchangeMark
     public async getSmartContractParamsOrThrowAsync(
         quote: SwapQuote,
         opts: Partial<SwapQuoteGetOutputOpts>,
-    ): Promise<SmartContractParamsInfo<ExchangeMarketBuySmartContractParams>> {
+    ): Promise<SmartContractParamsInfo<ExchangeMarketBuySmartContractParams | ExchangeMarketSellSmartContractParams>> {
         assert.isValidSwapQuote('quote', quote);
 
-        const { orders, makerAssetFillAmount } = quote;
+        const consumableQuote = (quote as any) as (
+            | MarketBuySwapQuote
+            | MarketSellSwapQuote);
+
+        const { orders } = consumableQuote;
 
         const signatures = _.map(orders, o => o.signature);
 
-        const params: ExchangeMarketBuySmartContractParams = {
-            orders,
-            signatures,
-            makerAssetFillAmount,
-        };
+        let params: ExchangeMarketBuySmartContractParams | ExchangeMarketSellSmartContractParams;
+        let methodName: string;
+
+        if (utils.isSwapQuoteMarketBuy(consumableQuote)) {
+            const { makerAssetFillAmount } = consumableQuote;
+
+            params = {
+                orders,
+                signatures,
+                makerAssetFillAmount,
+            };
+
+            methodName = 'marketBuyOrders';
+        } else {
+            const { takerAssetFillAmount } = consumableQuote;
+
+            params = {
+                orders,
+                signatures,
+                takerAssetFillAmount,
+            };
+
+            methodName = 'marketSellOrders';
+        }
 
         const methodAbi = utils.getMethodAbiFromContractAbi(
             this._contractWrappers.exchange.abi,
-            'marketBuyOrdersNoThrow',
+            methodName,
         ) as MethodAbi;
 
         return {
@@ -102,21 +139,41 @@ export class ExchangeSwapQuoteConsumer implements SwapQuoteConsumer<ExchangeMark
             assert.isBigNumber('gasPrice', gasPrice);
         }
 
-        const { orders, makerAssetFillAmount } = quote;
+        const consumableQuote = (quote as any) as (
+            | MarketBuySwapQuote
+            | MarketSellSwapQuote);
+
+        const { orders } = consumableQuote;
 
         const finalTakerAddress = await swapQuoteConsumerUtils.getTakerAddressOrThrowAsync(this.provider, opts);
 
         try {
-            const txHash = await this._contractWrappers.exchange.marketBuyOrdersNoThrowAsync(
-                orders,
-                makerAssetFillAmount,
-                finalTakerAddress,
-                {
-                    gasLimit,
-                    gasPrice,
-                    shouldValidate: true,
-                },
-            );
+            let txHash: string;
+            if (utils.isSwapQuoteMarketBuy(consumableQuote)) {
+                const { makerAssetFillAmount } = consumableQuote;
+                txHash = await this._contractWrappers.exchange.marketBuyOrdersNoThrowAsync(
+                    orders,
+                    makerAssetFillAmount,
+                    finalTakerAddress,
+                    {
+                        gasLimit,
+                        gasPrice,
+                        shouldValidate: true,
+                    },
+                );
+            } else {
+                const { takerAssetFillAmount } = consumableQuote;
+                txHash = await this._contractWrappers.exchange.marketSellOrdersNoThrowAsync(
+                    orders,
+                    takerAssetFillAmount,
+                    finalTakerAddress,
+                    {
+                        gasLimit,
+                        gasPrice,
+                        shouldValidate: true,
+                    },
+                );
+            }
             return txHash;
         } catch (err) {
             if (_.includes(err.message, ContractWrappersError.SignatureRequestDenied)) {
diff --git a/packages/asset-buyer/src/types.ts b/packages/asset-buyer/src/types.ts
index 7cd21c4e64..20ca938456 100644
--- a/packages/asset-buyer/src/types.ts
+++ b/packages/asset-buyer/src/types.ts
@@ -77,6 +77,12 @@ export interface ExchangeMarketBuySmartContractParams {
     signatures: string[];
 }
 
+export interface ExchangeMarketSellSmartContractParams {
+    orders: SignedOrder[];
+    takerAssetFillAmount: BigNumber;
+    signatures: string[];
+}
+
 /**
  * orders: An array of objects conforming to SignedOrder. These orders can be used to cover the requested assetBuyAmount plus slippage.
  * makerAssetFillAmount: The amount of makerAsset to swap for.
@@ -101,18 +107,6 @@ export interface ForwarderMarketSellSmartContractParams extends ExchangeMarketSe
     feeRecipient: string;
 }
 
-export interface ExchangeMarketBuySmartContractParams {
-    orders: SignedOrder[];
-    makerAssetFillAmount: BigNumber;
-    signatures: string[];
-}
-
-export interface ExchangeMarketSellSmartContractParams {
-    orders: SignedOrder[];
-    takerAssetFillAmount: BigNumber;
-    signatures: string[];
-}
-
 /**
  * Interface that varying SwapQuoteConsumers adhere to (exchange consumer, router consumer, forwarder consumer, coordinator consumer)
  * getCalldataOrThrow: Get CalldataInfo to swap for tokens with provided SwapQuote. Throws if invalid SwapQuote is provided.
@@ -187,14 +181,14 @@ export interface SwapQuote {
 
 export interface MarketSellSwapQuote extends SwapQuote {
     takerAssetFillAmount: BigNumber;
-    bestCaseQuoteInfo: MarketSellSwapQuoteInfo;
-    worstCaseQuoteInfo: MarketSellSwapQuoteInfo;
+    bestCaseQuoteInfo: SwapQuoteInfo;
+    worstCaseQuoteInfo: SwapQuoteInfo;
 }
 
 export interface MarketBuySwapQuote extends SwapQuote {
     makerAssetFillAmount: BigNumber;
-    bestCaseQuoteInfo: MarketBuySwapQuoteInfo;
-    worstCaseQuoteInfo: MarketBuySwapQuoteInfo;
+    bestCaseQuoteInfo: SwapQuoteInfo;
+    worstCaseQuoteInfo: SwapQuoteInfo;
 }
 
 export interface SwapQuoteWithAffiliateFee extends SwapQuote {
@@ -209,14 +203,8 @@ export interface SwapQuoteWithAffiliateFee extends SwapQuote {
 export interface SwapQuoteInfo {
     feeTakerTokenAmount: BigNumber;
     totalTakerTokenAmount: BigNumber;
-}
-
-export interface MarketSellSwapQuoteInfo extends SwapQuoteInfo {
-    makerTokenAmount: BigNumber;
-}
-
-export interface MarketBuySwapQuoteInfo extends SwapQuoteInfo {
     takerTokenAmount: BigNumber;
+    makerTokenAmount: BigNumber;
 }
 
 /**
diff --git a/packages/asset-buyer/src/utils/assert.ts b/packages/asset-buyer/src/utils/assert.ts
index 7bcfe4abf9..a1b45cc5e4 100644
--- a/packages/asset-buyer/src/utils/assert.ts
+++ b/packages/asset-buyer/src/utils/assert.ts
@@ -42,13 +42,8 @@ export const assert = {
     isValidSwapQuoteInfo(variableName: string, swapQuoteInfo: SwapQuoteInfo): void {
         sharedAssert.isBigNumber(`${variableName}.feeTakerTokenAmount`, swapQuoteInfo.feeTakerTokenAmount);
         sharedAssert.isBigNumber(`${variableName}.totalTakerTokenAmount`, swapQuoteInfo.totalTakerTokenAmount);
-        if (utils.isSwapQuoteInfoMarketBuy(swapQuoteInfo)) {
-            sharedAssert.isBigNumber(`${variableName}.takerTokenAmount`, swapQuoteInfo.takerTokenAmount);
-        } else if (utils.isSwapQuoteInfoMarketSell(swapQuoteInfo)) {
-            sharedAssert.isBigNumber(`${variableName}.takerTokenAmount`, swapQuoteInfo.makerTokenAmount);
-        } else {
-            throw new Error(SwapQuoteConsumerError.InvalidMarketSellOrMarketBuySwapQuote);
-        }
+        sharedAssert.isBigNumber(`${variableName}.takerTokenAmount`, swapQuoteInfo.takerTokenAmount);
+        sharedAssert.isBigNumber(`${variableName}.takerTokenAmount`, swapQuoteInfo.makerTokenAmount);
     },
     isValidOrderProvider(variableName: string, orderFetcher: OrderProvider): void {
         sharedAssert.isFunction(`${variableName}.getOrdersAsync`, orderFetcher.getOrdersAsync);
diff --git a/packages/asset-buyer/src/utils/swap_quote_calculator.ts b/packages/asset-buyer/src/utils/swap_quote_calculator.ts
index c05538bb04..4d2fbf1295 100644
--- a/packages/asset-buyer/src/utils/swap_quote_calculator.ts
+++ b/packages/asset-buyer/src/utils/swap_quote_calculator.ts
@@ -6,10 +6,9 @@ import { constants } from '../constants';
 import { InsufficientAssetLiquidityError } from '../errors';
 import {
     MarketBuySwapQuote,
-    MarketBuySwapQuoteInfo,
     MarketSellSwapQuote,
-    MarketSellSwapQuoteInfo,
     OrdersAndFillableAmounts,
+    SwapQuoteInfo,
     SwapQuoterError,
 } from '../types';
 
@@ -231,19 +230,19 @@ export const swapQuoteCalculator = {
 function calculateMarketBuyQuoteInfo(
     ordersAndFillableAmounts: OrdersAndFillableAmounts,
     feeOrdersAndFillableAmounts: OrdersAndFillableAmounts,
-    makerAssetBuyAmount: BigNumber,
+    makerTokenAmount: BigNumber,
     isMakerAssetZrxToken: boolean,
-): MarketBuySwapQuoteInfo {
+): SwapQuoteInfo {
     // find the total eth and zrx needed to buy assetAmount from the resultOrders from left to right
     let takerTokenAmount = constants.ZERO_AMOUNT;
     let zrxTakerTokenAmount = constants.ZERO_AMOUNT;
     if (isMakerAssetZrxToken) {
-        takerTokenAmount = findTakerTokenAmountNeededToBuyZrx(ordersAndFillableAmounts, makerAssetBuyAmount);
+        takerTokenAmount = findTakerTokenAmountNeededToBuyZrx(ordersAndFillableAmounts, makerTokenAmount);
     } else {
         // find eth and zrx amounts needed to buy
         const takerTokenAndZrxAmountToBuyAsset = findTakerTokenAndZrxAmountNeededToBuyAsset(
             ordersAndFillableAmounts,
-            makerAssetBuyAmount,
+            makerTokenAmount,
         );
         takerTokenAmount = takerTokenAndZrxAmountToBuyAsset[0];
         const zrxAmountToBuyAsset = takerTokenAndZrxAmountToBuyAsset[1];
@@ -256,6 +255,7 @@ function calculateMarketBuyQuoteInfo(
     // eth amount needed in total is the sum of the amount needed for the asset and the amount needed for fees
     const totalTakerTokenAmount = takerTokenAmount.plus(feeTakerTokenAmount);
     return {
+        makerTokenAmount,
         takerTokenAmount,
         feeTakerTokenAmount,
         totalTakerTokenAmount,
@@ -265,22 +265,22 @@ function calculateMarketBuyQuoteInfo(
 function calculateMarketSellQuoteInfo(
     ordersAndFillableAmounts: OrdersAndFillableAmounts,
     feeOrdersAndFillableAmounts: OrdersAndFillableAmounts,
-    takerAssetSellAmount: BigNumber,
+    takerTokenAmount: BigNumber,
     isMakerAssetZrxToken: boolean,
-): MarketSellSwapQuoteInfo {
+): SwapQuoteInfo {
     // find the total eth and zrx needed to buy assetAmount from the resultOrders from left to right
     let makerTokenAmount = constants.ZERO_AMOUNT;
     let zrxTakerTokenAmount = constants.ZERO_AMOUNT;
     if (isMakerAssetZrxToken) {
         makerTokenAmount = findZrxTokenAmountFromSellingTakerTokenAmount(
             ordersAndFillableAmounts,
-            takerAssetSellAmount,
+            takerTokenAmount,
         );
     } else {
         // find eth and zrx amounts needed to buy
         const takerTokenAndZrxAmountToBuyAsset = findMakerTokenAmountReceivedAndZrxAmountNeededToSellAsset(
             ordersAndFillableAmounts,
-            takerAssetSellAmount,
+            takerTokenAmount,
         );
         makerTokenAmount = takerTokenAndZrxAmountToBuyAsset[0];
         const zrxAmountToSellAsset = takerTokenAndZrxAmountToBuyAsset[1];
@@ -291,9 +291,10 @@ function calculateMarketSellQuoteInfo(
     const feeTakerTokenAmount = zrxTakerTokenAmount;
 
     // eth amount needed in total is the sum of the amount needed for the asset and the amount needed for fees
-    const totalTakerTokenAmount = takerAssetSellAmount.plus(feeTakerTokenAmount);
+    const totalTakerTokenAmount = takerTokenAmount.plus(feeTakerTokenAmount);
     return {
         makerTokenAmount,
+        takerTokenAmount,
         feeTakerTokenAmount,
         totalTakerTokenAmount,
     };
diff --git a/packages/asset-buyer/src/utils/utils.ts b/packages/asset-buyer/src/utils/utils.ts
index a208a7b908..24190aa687 100644
--- a/packages/asset-buyer/src/utils/utils.ts
+++ b/packages/asset-buyer/src/utils/utils.ts
@@ -6,11 +6,8 @@ import * as _ from 'lodash';
 import { constants } from '../constants';
 import {
     MarketBuySwapQuote,
-    MarketBuySwapQuoteInfo,
     MarketSellSwapQuote,
-    MarketSellSwapQuoteInfo,
     SwapQuote,
-    SwapQuoteInfo,
 } from '../types';
 
 // tslint:disable:no-unnecessary-type-assertion
@@ -39,10 +36,4 @@ export const utils = {
     isSwapQuoteMarketSell(quote: SwapQuote): quote is MarketSellSwapQuote {
         return (quote as MarketBuySwapQuote).makerAssetFillAmount !== undefined;
     },
-    isSwapQuoteInfoMarketBuy(quote: SwapQuoteInfo): quote is MarketBuySwapQuoteInfo {
-        return (quote as MarketBuySwapQuoteInfo).takerTokenAmount !== undefined;
-    },
-    isSwapQuoteInfoMarketSell(quote: SwapQuoteInfo): quote is MarketSellSwapQuoteInfo {
-        return (quote as MarketSellSwapQuoteInfo).makerTokenAmount !== undefined;
-    },
 };