I'm not sure I understand the business model for the aftermarket engine management systems. Unless there is a huge markup in a $2k box you must not get much "tuning" time from the dealer.
I've got to believe a "tuner" wants to make shop rates for the hours he spend tuning your car.
Who pays for the Wizzard to fly out to a race to help tune his userbase?
If the megasquirt autotune works to get you in the ballpark it may be/become the only affordable option to the stock/enhanced ECM.