I'd bet that included chassis dyno time during tuning....remember, you gotta compare apples to apples. My brothers shop I believe charges $299 ( CAL-SPEED & PERFORMANCE ) for a chassis dyno tune for an LSX based motor. Plus $100 extra for the Speed Density. It will cost you that much money for chassis dyno time even with Megasquirt.

Plus Megasquirt III is $645 for a built PCM...for $35 you can buy an LS 411 PCM (that's what I paid)+for $500 you can just buy the HP Tuners software (I've seen it for $250-$300 used) and tune it all yourself. So, it's still cheaper than Megasquirt (not that there's anything wrong with megasquirt)

Or for $35 for a LS1 PCM + $299-$400 for a MAF based tune by a tuner on a chassis dyno you don't even have to know how to tune and will be up an running.

Lot's of options...nothing wrong with Megasquirt though...