Which buyer earns a top priority standing, committing the seller to complete the deal with him?

Would it be the first to post, "PM Sent" or "I'll take it for your asking price" or these other situations?

.

Selling Priority Goes To
single choice
1st person who posts "PM sent" regardless what the PM says
15%, 10 Votes
1st person who sends a PM saying he will buy at the asking price
60%, 40 Votes
1st person who sends a PM with a question about the item
6%, 4 Votes
1st person who makes an offer, even if it is for less than the asking price
3%, 2 Votes
Seller's choice of the best situation for him
16%, 11 Votes
Total Votes: 67
Voting on this poll ends: Sun May 12 2013 06:00 PM

Jim "Oldgas" Potts
Your host and moderator