VoR0220, is this what you mean?
Customer sends BitAssets to address xxx => vendor automatically creates and fulfills an order containing that item? Each item has a different BTS address.
Maybe similar to Amazon 1-Click ordering?
I saw a similar concept to that in an image a couple of years ago that I can't find anymore. It was a menu at a restaurant, and each item on the menu had its own BTC address / QR code. To order something, you would send the correct amount to the address listed next to it.