To add another good source for SACDs, try Acoustic Sounds, acousticsounds.com, IIRC. That's Chad Kassem's equivalent to Music Direct and my other go-to site for music. Chad also owns Analogue Productions, which does, for my money, the best remasterings and pressings I've experienced. Most of the stuff they release on vinyl also comes out on SACD.
Their CCR set from some years ago remains to this day the finest vinyl I've ever purchased and his SACDs are just as good.