I don't get the mini's, seem too limited to have much fun with, and for $250 you can get a CRT.5 with 1/8 worthy diffs, real dogbones, 7075 chassis and towers, and a much greater potential for fun. The .5s can even run on a 1/8th track.
Seems like one of those fad things. Bunch of people will buy them, play a bit, get bored, then sell them off.
Eh, but whatever.. as long as you have fun.