Marketplace bug
if you right click and select to sell an item and the TP opens at the sell page, and you then select the other item it can cause what you are describing.
what it basically does is keeps the item you have selected to sell then puts that with the value of the next item you later chose (it wont sell for lower than highest bidder of original item to my knowledge), I know of someone that accidentally sold a precursor for highest bidders price rather than what he had planned to sell it for because of this.
did you put in a bug report in game when it happened, or contacted support with times and names of the items so they can track what has happened easier. I don’t believe its possible to get any of your items back or sort out the prices as someone else has them now but it should help fix the issue one day.
Whiteside Ridge server
The future belongs to those who believe in the beauty of their dreams.
I also figured that would cause it. Sometimes when right clicking an item to sell on TP, it just opens the regular sell page and the bug occurs when you select an item other than the one you right clicked.
I didn’t report ingame since i just lost a few silver but yeah, if this is more common than i thought, i wonder why it’s still happening.