diff --git a/src/services/purchaseService.ts b/src/services/purchaseService.ts
index a20019f7..7e525168 100644
--- a/src/services/purchaseService.ts
+++ b/src/services/purchaseService.ts
@@ -51,12 +51,17 @@ export const handlePurchase = async (
     logger.debug("purchase request", purchaseRequest);
 
     const prePurchaseInventoryChanges: IInventoryChanges = {};
-    if (purchaseRequest.PurchaseParams.Source == 7 && purchaseRequest.PurchaseParams.ExtraPurchaseInfoJson) {
+    if (purchaseRequest.PurchaseParams.Source == 7) {
         const manifest = getVendorManifestByOid(purchaseRequest.PurchaseParams.SourceId!);
         if (manifest) {
-            const ItemId = (JSON.parse(purchaseRequest.PurchaseParams.ExtraPurchaseInfoJson) as { ItemId: string })
-                .ItemId;
-            const offer = manifest.VendorInfo.ItemManifest.find(x => x.Id.$oid == ItemId);
+            let ItemId: string | undefined;
+            if (purchaseRequest.PurchaseParams.ExtraPurchaseInfoJson) {
+                ItemId = (JSON.parse(purchaseRequest.PurchaseParams.ExtraPurchaseInfoJson) as { ItemId: string })
+                    .ItemId;
+            }
+            const offer = ItemId
+                ? manifest.VendorInfo.ItemManifest.find(x => x.Id.$oid == ItemId)
+                : manifest.VendorInfo.ItemManifest.find(x => x.StoreItem == purchaseRequest.PurchaseParams.StoreItem);
             if (!offer) {
                 throw new Error(`unknown vendor offer: ${ItemId}`);
             }
@@ -68,7 +73,7 @@ export const handlePurchase = async (
                     prePurchaseInventoryChanges
                 );
             }
-            if (!config.noVendorPurchaseLimits) {
+            if (!config.noVendorPurchaseLimits && ItemId) {
                 inventory.RecentVendorPurchases ??= [];
                 let vendorPurchases = inventory.RecentVendorPurchases.find(
                     x => x.VendorType == manifest.VendorInfo.TypeName