With the exception of Scavenger you should still be able to find them all on shelves.
I wasn't going to get a SS Devastator but then in the deathly quiet first half of last year I bought a Rampage and was impressed with how he pulled off his alien nature. I got a Scrapmetal and he was okaaay but Hightower was gleefully weird. At that point I needed tubby old Long Haul and I was committed. I have Scavenger waiting to be opened and looking cool while I have been messing with Mixmaster all week. It is a commitment but the set will be a really unusual Transformer figure and stand out as vehicles, separate, and combined.