MicroRCEngineering -- that's a nice chunk of change. Way too steep for me at the moment.
Question though: You ran that car (I've seen the video) on a street. Mini-Z's don't run very well on asphalt, but do DTMs out of the box run okay on road surfaces? That's one question I forgot to ask.
Maybe if this sale hangs around for awhile, I can save enough... a long while...