Does an auction end at the specific time like Ebay, where you may want to put in a bid right at the end. Or is it like Gunbroker where each bid extends the closing time by 15 mins. If you bid to the max you are willing to pay will it only bid enough to top the current bid or does it go to your max? Trying to buy an M35 in the next few days. I can either drive it the 160 miles home or pay 1k for shipping. Ad says it runs. No inspection allowed.