ok, just did a working example MR today, I'm not saying its typical but it shows the potential.

R1 left with 1& 3 no1 won $9 (IAS fixed)
R2 3&5 No 3 won $8 "
R3 6,7,8 No7 won$21 "
R4 4
R5 5,10
R6 14,15
R7 3


Total out = $13 total in = $38

needless to say there will be many days when all the winners will be less than $8 or whatever limit you set, but the good days have the potential to be VERY good (I think)