This addon monitors items being sold to vendors, and provides a prompt to the user when it appears that they may not intend to vendor the item.
The detection algorithm is likely imperfect, but looks for the following things as an indication that its not just junk:
- Item is plus'd
- Item is tiered
- Item has 3 or more rune slots
- item has an embedded rune
- Item has been unbound with a bind lifter