You really never know with other bidders. We were involved in a bidding process a while ago and no matter what amount we went up (once 6 or 7k, another time 5k before bringing it down), other bidder just went one thousand more, everytime! Finally reached our limit and went €500 more, other bidder went €500 more. Let them have it at that stage & it was way over priced...was over €25k over asking.