bootlegs are cheap on ebay
=P
but seriously, I believe Emerald was marked down to $10 at TRU. MightySlacker was saying a few months back, there was a location in OH that had like 10-20 copies of it for a long ass time but at this point it'd be near impossible to find.
As far as game pro coupons, you can always just open a magazine at walmart and tear the coupon sheet out. Personally I dont think twice about it since the magazines usually all go unsold and end up getting field destroyed at the end of the month.