http://www.project1999.com/forums/sh...d.php?t=272132
My source, which is actually thanks to this fella above!
I have a fancy excel file I put together that supports this (found a minor error in original calc, closer to 50 stacks, big whoop!)
Plus, just thinking logically, would people really pay 10p per stack to do 250 hand ins for a whopping 2 levels? O.o