How the price system for graded toys/comics works. I understand that a G.i.joe special(comic) AFAed at 9.8 is $260 and a 9.6 is $100(how do you get a $160 increase by a .2 difference?). not AFAed is $80.00. Those prices just seem to random to me.What is a 10.0 worth? Would a 8.0 bring the value below the non-AFA price? Does the AFA have a set price on the different grades or do they just put random numbers on things and let the market determine the value?