It happens to me all the time. I'll see a TF and not really want it all that much... and then I end up getting another TF and just think they're not complete without their BFF/trinemates/sibling. Some examples: I had classics Starscream, and I was really excited when Thundercracker came out, because I don't have a (transformable) Thundercracker. I wasn't really concerned about Skywarp, because I have an MP Warp. Of course, I put TC next to Screamer, and now they just look... odd without a classics-sized Warp standing next to them. Now I have this burning desire for a classics Skywarp, where I had virtually no desire for one before. Of course, Warps are selling for a fortune, so I might have to settle for a CHMS Warp... I passed on classics Hound when he came out, because I have an Alternators Hound (and he just happens to be my favorite toy), so I'm like, "Yeah, nothing can top him. I'll pass on the classics version." But then the classics Mirage I won on eBay arrived in the mail yesterday, and I was like, "Shit. I neeeeeed a Hound he can go pal around with. FUCK." I also passed on classics Prowl 'cause he's not one of my favorite characters. Of course, after I purchased RTS Jazz, I was like, "Dude, he needs to go annoy Prowl."