OK, so this is a bit of a strange one. However, it’s a simple UI issue.
Simply put, that “Do you want to buy?” option will remain open between vendors if you hit the “X” close menu option.
It’s probably easiest to explain with some simple steps:
Simple steps:
- Open vendor
- Select item to buy
- “X” out of interaction (menu) without selecting the “no” X (don’t buy)
- Open another vendor
Menu will still be there with the old price. Selecting “yes” to buy purchases the item from the new vendor at that vendor’s price.