That price is probably double what I'd even consider for a 'track' toy if I were in the market for one. I'd sooner look for a used WRX, GTI, Supra ect....something where parts would be relatively cheap and there would be lots of options for modding it the way I wanted it. Would they be faster than this car, no - could they be equally fun, YES. Heck, I'd even consider a used CBR/ZX6/GSX-R - they can be had for 3-5000 and would likely be equally as fast if not faster with few modifications.
And no, I don't care how much they cost, or how good they are on the track, I would not buy a Miata.