Usually I only buy games that are available on both PS3 and Vita (then buy the Vita version if it's not Cross Buy/Play), but with Terraria, I'll make an exception.
Me and my wife played the shit out of this game on the PC, and we'll play the shit out of it on the PS3. Definite must buy. $14.99? Worth it in my opinion. Once they announce the Vita version, I'll get that one as well, and proceed to not play anything else on it for a long, long time. Damn, and I just started Persona 4 Golden, too.
I wasn't sure what to expect from Terraria when I first got it a few years back, but I loved the look of it, and the hype got to me, and I caved and bought it. One of the best purchases I've made all generation (with my Vita, and the new gaming PC I built being the top two purchases of the gen).
I'm going to have to give my Vita to my boss when I go into work, because it will be impossible for me to get any work done with Terraria on it. Hurry up and announce that Vita version, 505! You've already teased it!
I think, with the PS3 version, I'm actually going to take the time to really build some cool homes and stuff. I didn't really invest in that on the PC, and pretty much just built structures around utility.
My wife was big on actually making good looking buildings and structures, and finding all of the cool items and weapons. When I'd come home from work, she'd have a new set of stuff to give me, so I could help her adventure better. I think she was more addicted to the game than I was. Lol.