Shameless Fishing Expedition - Track frame for sale maybe

I personally don't understand how "with bidding remaining open 10 minutes after last bid (no sniping)." would work? Surely that just leaves it open infinitely if people keep bidding within 10 minutes of the last bid, or leaves it just as open to sniping just with the auction ending 10 minutes later.

Sniping would be impossible - each attempted snipe would extend the time by 10 mins