since 30mg Ir oxys go for about 30 a piece( sometimes less, some more) then 1 buck a mg is probably where you would be.... it doesnt make much sense to buy a 80mg OC for 120 bucks when they can get a roxi for 30, especially when the roxi is made to be IR (although the old school OC are pretty much IR too) But, I have seen crazier things happen... but i would think that 80 bucks would be really close to your breaking point..