If someone bids on an item during the last few minutes of the auction Kyoubai should add a few extra minutes to the auction time.

Most real auction sites do this. This might depend on who you ask, but I certainly feel an auction is about the struggle between a group of people bidding high amounts of money on rare items until the one winner remains. This way, as long as you have enough flezz to match the status of the item you’re bidding on everyone has a chance, and the seller makes a better profit.

I don’t know about you guys, but I certainly don’t feel like an auction should be “whoever bids during the last 10 seconds win lol”.