diff --git a/lib/shopify/index.ts b/lib/shopify/index.ts
index 5ac64b667..389bf2dcb 100644
--- a/lib/shopify/index.ts
+++ b/lib/shopify/index.ts
@@ -75,9 +75,8 @@ export async function addToCart(
   cartId: string,
   lines: { merchandiseId: string; quantity: number }[]
 ): Promise<Cart> {
-  const prevCart = await payload.findByID<PayloadCart>('carts', cartId);
+  const prevCart = await payload.findByID<PayloadCart>('carts', cartId, { depth: 0 });
   const cartItems = await mergeItems(prevCart.lines, lines, true);
-
   const cart = await payload.update<PayloadCart>('carts', cartId, {
     lines: cartItems
   });
@@ -85,7 +84,7 @@ export async function addToCart(
 }
 
 export async function removeFromCart(cartId: string, lineIds: string[]): Promise<Cart> {
-  const prevCart = await payload.findByID<PayloadCart>('carts', cartId);
+  const prevCart = await payload.findByID<PayloadCart>('carts', cartId, { depth: 0 });
   const lines = prevCart?.lines?.filter((lineItem) => !lineIds.includes(lineItem.id!)) ?? [];
   const cart = await payload.update<PayloadCart>('carts', cartId, { lines });
   return reshapeCart(cart.doc);
@@ -135,9 +134,8 @@ export async function updateCart(
   cartId: string,
   lines: { id: string; merchandiseId: string; quantity: number }[]
 ): Promise<Cart> {
-  const prevCart = await payload.findByID<PayloadCart>('carts', cartId);
+  const prevCart = await payload.findByID<PayloadCart>('carts', cartId, { depth: 0 });
   const cartItems = await mergeItems(prevCart.lines, lines, false);
-
   const cart = await payload.update<PayloadCart>('carts', cartId, { lines: cartItems });
   return reshapeCart(cart.doc);
 }
@@ -267,7 +265,7 @@ export async function getCollectionProducts({
   if (tag) {
     filters.push({
       tags: {
-        equals: collection
+        equals: tag
       }
     });
   }
diff --git a/lib/shopify/payload.ts b/lib/shopify/payload.ts
index 1279c1fec..45981996a 100644
--- a/lib/shopify/payload.ts
+++ b/lib/shopify/payload.ts
@@ -51,7 +51,11 @@ type Doc<T> = {
   doc: T;
 };
 
-type FindParams = {
+type BaseParams = {
+  depth?: number;
+};
+
+type FindParams = BaseParams & {
   where?: Where;
   depth?: number;
   sort?: string;
@@ -70,15 +74,15 @@ export class Payload {
     this.baseUrl = baseUrl;
   }
 
-  find = <T>(collection: Collection, params: FindParams) => {
+  find = <T>(collection: Collection, params: FindParams = {}) => {
     const query = qs.stringify(params, { addQueryPrefix: true });
-
     const url = `${this.baseUrl}/api/${collection}${query}`;
     return ajax<PaginatedDocs<T>>('GET', url);
   };
 
-  findByID = <T>(collection: Collection, id: string) => {
-    const url = `${this.baseUrl}/api/${collection}/${id}`;
+  findByID = <T>(collection: Collection, id: string, params: BaseParams = {}) => {
+    const query = qs.stringify(params, { addQueryPrefix: true });
+    const url = `${this.baseUrl}/api/${collection}/${id}${query}`;
     return ajax<T>('GET', url);
   };