The first I'll take it, doesn't always mean they'll follow through with the sale. In the interim, other interested parties may have moved on.

The way I view it, it's my property until I accept payment. Until then, I'll decide to whom it will be sold or given away to.
More frequently than not, I'm now checking the posting history of respondents. If I deem them active contributing members of the board, they'll receive preferential treatment and until that policy is disallowed by the administration, I'll continue to use that as my guide. Based on my experiences, I'm not about to do business with anyone whose entire posting history is limited to the classified section.

Best, Dave