So, now Best Beloved and I are arguing over whether or not to buy Star Trek: TOS. (BB: You like them. You never like TV. We should get them! Me: Have you seen what they cost? That's ridiculous! For that price, Leonard Nimoy should deliver them to me in person!)
Help us out, please. The three-season set works out to be cheaper per season, though it's still nothing like a bargain, but I've heard the third seasons sucks. Also, FYI, I can't obtain these through less legal means if I want to watch very many of them; I need subtitles.
Buying Star Trek: TOS?
Get the first two seasons individually - the third season isn't worth the totally exorbitant price.
Get the three-season set; you'll end up wanting them all anyway.
Don't get any of the seasons! You've already seen the best this show has to offer and shouldn't watch any more episodes.