Bidding bot/exploit on auction?

[marina123]

I've noticed that when you try to bid on items, sometimes you keep getting message that bid is too low, meaning that somebody just bid slightly higher. And you keep getting this message no matter how much your bid is. First time I encountered this I thought that I got in the middle of a bidding war between people. But when the item is left alone, the bidding price stops going up and when you try and bid again, bid is low again. Doesnt seem human. What kind of bot/exploit might be used here?

[moletas]

there is biding system wich works like this.

If you are first bidder and item minimum bid is 500k but you know item worth 6 mill you bid 6 mill as first bidder. So another person still see min bid 500k but he bids 600k and he gets insta autbid now yours minimum bid is 630k or smth and yuo will continue to win till someone bids more than 6 million, but if max another person bid is 4 milion you win item for 4.2million and get 1.8 milion as a refund.

it works only if you are first bidder on item.