I am trying to find a good deal on double CD jewel cases with black inserts (clear would be OK, but I prefer black). I'm not looking for the slim kind, but the ones that commercial 2-disc CDs come in that will hold front and back inserts. There are tons of retailers selling them online, but most of them kill you with the shipping charges. Does anyone know if there is a nationwide retailer that actually sells them in-store? I have found them in one music store here in Portland, OR, but it's not always the most convenient place to go, and I don't care for the kind they stock (I know, I'm picky). Any ideas?