I know you say you don't trust Ebay. I hear you. I do it, though. I only buy from those selling in my country with 99 - 100% ratings. I read any negative and neutral reviews within the last year. I have had good luck with so far. I am also completely ok with just the disk and a generic case, though. I've bought blu ray Beauty and the Beast and Lion King and another, but it's escaping me at the moment.
I had no luck finding Snow White on blu ray at a reasonable price on Ebay so I got the DVD from there, instead. Was perfectly fine for the kids.