In terms of price, it usually tends to go like this (from most expensive to least): eBay (for specifics, at least.. everything's L@@K! ULTRA RARE) Indie game shops (for anything first party or brand name, i.e. Mario 64 going for $35 because "Mario is Mario" -_-) Gamestop (they have more of an "out with the old, in with the new" policy so you can find some insane clearance deals) Thrift/2nd-hand stores/Private sales/Auctions - A cheap and totally random goldmine
Thanks for the rundown dood. The insane clearance deal I have had before, my local ASDA was selling Fallout 3 for £3 just a few months after it came out in order to free up games for new releases. The console came and didnt have one in already sadly =(