Indeed, but having a bid come in at 30 sec. to go is somewhat disconcerting, as you suddenly have another bidder on the scene, who hasn't previously appeared, with no bidding history on that item.Gunbroker has their 15 minute rule, so really bidding any time under 15 minutes is going to reset the "clock" to 15 minutes anyhow, whether you bid at 14 minutes to go or 30 seconds to go.
Just saying. (Been on the receiving end a few times...)