I got the special edition of Skyward Sword, but only because I need a WiiMote+ and I wanted that CD. Outside of that I'm the same way, unless you're offering something really awesome I don't go for special editions.
Oh I got that as well because my Wii Remote plus adapters were wonky. That's 3. I also got the Wii Sports Resort with the added dongle because it was cheaper, which is funny in retrospect for a grand total of four.
BD:FF, Naruto Wii, Wii Sports Resort, Zelda:SS.
BD:FF was because I had a Gamestop gift card in an era where I bought everything digitally and had nothing else I could think of to buy. I ended up getting the game digitally anyways and giving a friend the game card. Naruto was the same price but with a movie (one not worth it for free though)
I got the Halo cat helmet edition for 2 dollars and it ended up being brand new. I think I resold it for ten!
I'm sick of physical junk clogging up my life though and my new rule is only buying physical games I really want that are ten bucks or less or come with something absolutely amazing. Smash Wii U is sorely testing my resolve. I might get it digitally AND grab the set with the controller and GCN adapter.