I have done these steps:
1. entered http://sandbox.ebay.com/itm/ENTER_ITEM_ID_HERE (in my case 110532349041)
2. click "Commit to buy" -> "Pay now"
3. in checkout card info was entered
4. even got "Your order's in" message 1.PNG
After these steps the product wasn't bought. I have to buy this product to see paid order in getOrders API (Fulfillment API). Could you please tell me how to actually buy a product. Does it possible in the sandbox env?