Amazon MCF and Buy with Prime

Open works. But it updates some incredibly incorrect inventory updates.
I updated my products on Shopify and had them fully mapped, and the inventory still said 2950 units available 1 hour later, even though the real units available was 152... this is a HUGE difference.

We've been using this for a few months while we switched 3PL providers- customers love the fast shipping and since we already have inventory in Amazon its a no-brainer. We just added buy with prime and found our conversion rates improved due to the simplicity and speed that customers receive the orders. We are are not going back! Its important to note you don't pay amazon any fees other than fulfillment so it's actually cheaper than our regular 3PL for faster service.

配送オプションのDelivery instructionsを選べないため、デフォルトの「無人配達(置き配)」になる。
これが原因でトラブルになったため、使用はやめました。