Auction.com min reserve

[Lindel Turner]

I was bidding on a sfr on auction.com It would not accept my bid past 85k. However when I tried to up it to 85,500 or 86k it said 5k increments only. At end of auction winning bid was 86k does the site lower the minimum required closer to the end of auction? I was frustrated and quit trying about 45 min before auction ended