Low Bid

One problem we see (as an engineering consultant) is clients try the "lowest price conforming" method then, after a series of failures they revert to a (often quite complicated) technical ability and price weighting system. Trouble is, fiddle the technical evaluation so that all bidders get the same score, then it just comes down to price. Even better, if lowest price comes from technically best bidder, just find a reason to knock their technical score down so that their price gets inflated, then you have the winner you wanted from the beginning.