Super Mario 64, and I think most of the other top-end N64 exclusives, had a $70 MSRP in 1996 dollars. According to that calculator, that's $99 in 2011 dollars.
I remember I wanted to buy Zaxxon for the Colecovision, and it was $59.99. This was in 1983. It seems that the top games are always $60. Of course, $60 in 1983 dollars is $140 in 2012 dollars. That's a lot of money for a faux-3D sidescroller!