Jeez, Earthbound? You definitely scored if the systems are in good shape. Super Metroid is a great pickup too; easy $30-40. I have Metroid for the NES, don't think that one's worth anything.
The Mega Man games make up the difference for sure though. I think X is the cheapest of the lot, but the rest range from $20-40 a piece. (Care to post a pic of Mega Man X front and back? I think mine is a bootleg.
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