You see an ad on ODT that interests you. You PM the seller. You travel a lot. You say "if you sell it before we meet, that's okay with me, don't hold it for me." You make arrangements to meet to look at the item. At no point have you said, "I'll take it." Both parties are on time for the meeting. You shake hands. You look at the item and decide the item is not particularly worth (to you) what the seller is asking. You offer less. The seller says no. You say thank you and good luck selling it. You shake hands. You leave. Is the seller justified in leaving negative feedback?