BST etiquette

[Flintboy]

Had a card for sale with a listed price. A member asked for more detailed information on the condition of the card. I respond a short time later and the member asks if I will take “X” for it. When I log back in I get a message from another member stating he will take the card at full ask. I message the member stating the card sold at full ask.

The member gets a little upset stating that since he “was in negotiations for the card” I should have given him the chance to purchase it at the full ask.

I don’t understand that since it was listed with a price and he could have stated at any time I’ll take it at the asking price. If you wanted the card that bad pony up the extra $20 and just take it.

How does the majority see this? I’m sure it happens on occasion and I always try to do the right thing. I guess in the future I’ll have to phrase all my auctions like another member here with “I’ll take it trumps all other negotiations”. I thought that would be understandable but I guess not.