I bought a complete MegaSquirt setup off of the guy that assembled it. It was running a 300 inline 6 in a 73 Bronco, and he took it out to swap in a Thunderbird Super Coupe 3.8SC (and kept the Ford EECIV setup).
ECU:
Relay Board:
MegaStim:
I also have a box full of bagged new components, the software CD's for a laptop, a manual, and a GM throttle body that I was going to attempt to use on the Javelin, but I am in over my head and really need the funds for some more required repairs.
The MS appears to be an MS1 PCB2.2, the relay board is a 1.1, and the MegaStim is a V2.21.
Near as I can tell, if you had to buy the major components assembled from DIYAutoTune, you'd be looking at $550, not including shipping, taxes, or any of the spares/extras/TB.
I'll sell it for the GRM special of $400 including free Priority Mail shipping. If that's not a good deal, feel free to berate me and offer me 37 cents and a half-used stick of gum for it.