Unit price must be higher than vendor value!
I wish they would reword it so it wouldn’t be as annoying. I got kind of tired seeing it when I am trying to sell my items and it turns out most of them cannot be sold. Just save us the time and gray out the items before we decide to click on it and see this evil message. Or better yet make a checkbox that lets us see or not see the items that we are not going to be able to sell.