I don't see any threat.
You should be ashamed of yourself. You want to cause conflict because of $29.
It's buy now, not an auction.
Why participate if you have no clue how it works.
That member has been around for years, running legit auctions. Have some respect.
You messed up, discuss with him private and reach a resolution. You should be apologizing and trying to work it out with him, instead of trying to make him look bad.