Hmmmm...I don't know-but do know you can bid your maximum bid-like if you find something that is at 50 credits, you can bid 200 and it will automatically outbid anyone who bids in between.
It shouldn't unless someone has bid over your maximum bid or right up to it. So if you find something for 50 and bid 200-if someone else put a maximum of 199, it would go to 200. If someone bid 201, it would go to 201. Really, you can't tell what someone else has put in as their maximum bid-which is good.