I think you would find most economist share my opinion. This is an item in low supply with a market price far higher than $20. Since GameStop cannot markup the price of the adaptor, they are forced the create a ridiculous bundle to ensure the item remains in stock. If they were to simply sell the adaptor for $20 the majority would be resold on secondary markets at market clearing price.Yes, because the people who want it most have zero Gamecube controllers.
I know there is a defense force for everything on Gaf (and particularly for GS from its many employees) but some of these responses are just too ridiculous.