How much does Zone Raiders for Mac go for still sealed?

[NavesRegge]

I managed to get a bunch of copies of "Zone Raiders," an old PC game from the 90s (?) that were unopened or in good condition. I did look this up on eBay which told me it was worth about $50. Does anyone know what its actual price is? Is there a rarity guide for PC/Mac games like some consoles have? Am I sitting on a pile of rare gold or a pile of junk? I did look up a review and it seems to be nothing special, so I may sell a few copies via eBay or something. Maybe...maybe...

[ApolloBoy]

I don't know rare it is, but I used to play Zone Raiders on DOS when I was a kid and it kicked ass.