Far too many crummy games for the system. And most of the really good games go for far too much.
On the other hand, the system has oodles of fantastic games over in Japan. Japanese Saturn games have gotten pretty darn cheap, and modding a US system to play Japanese games is pretty simple.
EDIT: a quick browsing of ebay suggests the popular Japanese Saturn games are as expensive as ever. So hmmmm, yeah, Saturn's a tough call.
There are loads of great Japanese Saturn games for peanuts. I mean absoluetly JACK SHIT prices. I stopped buying US releases ages ago (when the system was still going) for the same reason I don't buy US PCE games; nightmare packaging, box art, censorship, too expensive, etc.
I mean, seriously, do you want this (keep in mind there is a %80 chance the shitty US case will be broken):
or this:
This:
or this: