Well, off the top of my head, I have No Mercy, Wrestlemania 2000, Goldeneye, Star Wars something or other, and a few more games. I haven't played it in a few years, and it is boxed up in a storage closet in my apartment. The only game I would really want to keep would be Goldeneye, as my g/f's brother still has a N64 as well. Looks like you would get a better deal from those eBay auctions, though.
If you would rather get mine, by all means do. But if you can grab one for $20-25 on eBay that is less than what I would sell mine for. I was agreeing with your $50-75 range.