It is almost on the verge of collusion. Take two guys that know each other and are the #1 and #2 highest guys with prospect budget. They can tell they have everyone beat - #2 says to #1 "Hey, I know you can get this guy if you want so I'm not going to bid, so all you have to beat is #3". I won't say I've never done this before, but I'm really starting to think it is unfair.