[donkeykong2]

ok, you call 320 $ to win the pot (900) and the remaining 650, so 1550 in total. this has to work around 20% of the time to be good. chucky said u hit a set 27% of the time, the problem here is that u don t always win when you have hit a set. i would guess u lose around 20% of the time if u hit a set which means u win 27%-5%=22% and lose everything 5% of the time. net 17%.
only set mining probably isnt profitable here but if you can play the straight and flush draws at least a bit profitable this is a breakeven call.