Megastim V2.21 assembled (by me). $35 shipped.

That's cheaper than they cost unassembled. It's useful for basic tests while assembling your MS, but once you make the Miata specific mods, it won't input the ignition signal.
Worked great during my MS build, I just don't need it anymore since I finished my MS.

Bought it from DIYAutotune.com as seen here for $45 unassembled.

 

Sorry, nevermind

 

Man, I know it's been a long time since this was posted, but any chance you still have this stimulator?

I'm about to start an arduino to MSPNP project, and I think this could be useful..