I don't see it. 90% of the time ( it seems) I'll buy in for $10 get the "Free" Heineken and try to double it to $20 and I have zero credits after two sips off of the beer. Granted I don't search out the elusive machine with a theoretical 100.213469 % payback that might exist at Vegas World ( Strat tower place now) or the one machine at some obscure dump.