OK, PC III: $300 (w/tax)
2 hrs. labor: $160
Dyno tune with custom map: $200
Total is $660. So your estimate is not unreasonable. It's a recession; talk
'em down to $650.

Honestly, if they spend a lot of time working on the
fuel map to optimize the dyno performance, the price could vary a lot. It's
usually good to get a positive recommendation from another rider in regards to
dyno shops (do they take one or two runs and call it done or more involved?).