Their individual membership is $399/year[1] for "unlimited" books and videos, but there's no obvious place on their website where they actually list the books available -- very annoying.

I suppose their target audience is a manager at a large enterprise who's buying a subscription as a perk for his employees; he doesn't really care about a precise list of books so long as he knows that it's big.

[1] https://www.safaribooksonline.com/pricing/