so it happened to me a couple of times while selling. I’d sell an item I wanted to keep with me mainly because as I sell items the remaining items rearrange in an odd way. I would definatly want to see that fixed. but also I’d suggest having a wares or locking system, either I lock items so I can’t sell them or mark items as wares and simply press sell wares and thats done
Sounds like a great idea ! It happened to me as well 
could be helpful.
Either a locking system where it pops up a warning for the items i selected previously… that is maybe activate for legendarys automatically.
And/or a “undo” function at vendors.
Hey thanks for the feedback, sent it to our devs!