Whaddya mean there ain't no Season Six available...?

So I've been watching Agents of Shield on DVD from my local library.  Got through Season Five but the library doesn't list Season Six in the inventory.  They list Season Seven, but not Season Six.  They suggested I try an interlibrary loan.  Started that process and checked Amazon for the ISBN number.  Ain't no Season Six on disk shown on Amazon, either.  You can stream it, but you can't buy a hard copy.  I'm guessing the interlibrary loan is going to crap out, based on that. 

Is it just me, or does that sort of thing chap your hide, too?

Any other popular shows have similar problems?  If that happened with "The Wire" or something I'd be truly pissed...

Not a terribly uncommon issue - you can't buy the first season of Spongebob Squarepants due to copyright issues with a Tiny Tim song as one example, and IIRC Megas XLR episodes can't be purchased in any way since it was written off as a loss when the episodes stopped airing. Anyway, DM me if you want Season 6

Yeah, not that uncommon.