[bane]

There's actually a very large collection of Saturn games archives at archive.org. They're MESS compatible CHD files (I wish other emulators would support it, it's a good way to handle large drive copies), but it's a fairly good collection.

[voltagex_]

I may be wrong, but a quick Google shows a lack of development resources for the CHD format. Either they need to do some SEO, or some straight up marketing.