Just curious

 
So, you have something for sale so you list it on the site
Come back an hour later and you have two people wanting to buy
One is a regular user and is always helpful
The other is a lurker who has made 4 posts in 3 years

Sell to the first to post, or to the active member?

Confucius say:

Get both buyers in one room with the item. Start up chainsaw and makes moves to cut item into 2.
The one that tries to stop you is the rightful new owner