I have a few questions regarding the bidding system in the Buy/Sell/Trade section. Actually I've never used the system myself as a bidder though I've used it in my sales threads. If I bid on something and win the auction, do I get notified of the victory of the bidding war? Sometimes I get very busy and I can easily forget about things.. What happens if I win and never proceed with the payment? Also, how does the BUY-IT-NOW functionality work?
Yes you get notified, if you don't pay for a winning bid, we have the option if banning you (but at the very least all users can see you didn't pay), Buy It Now works by paying a specific price someone is willing to accept to close the auction and that person is the winner automatically.
You can also check all the sales you've won by clicking this link: http://forums.digitalpoint.com/marketplace.php?do=won it's good cause it provides all the items in a nice easy to read list with pretty much all the information you need about the sale.