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Not sure if you frequent this board still (been 2 years since your last post), but figured I'd answer your question.
As far as the cost, no idea since I don't own it and just started looking at it. The cart you'd need to run it is a 4 in 1 action replay. If you go to PlayAsia.com and click on Classics, it's the first item for sale. The thing allows import games to run on your saturn, automatically upgrades ram for the games that require it, saves your games, and is a gameshark. A bargain at $25.