I had the same thought a few years ago sikyne and through my research and going and getting demos from Dynapak and the competitors (Dyno Dynamics) I was totally sold on the Dynapack too....just the then $50K price tag stopped me from purchasing.

A dyno run that I thought would take about 15min it would be fair to charge $50 I thought (maybe that should be more now).

Would $100 an hour be reasonable....hmm maybe (just trying to gauge my own tight-arse-meter).

I calculated that it would probably take 5 years to pay it back - 3 if I went hardcore.....but at the time i decided not to give up my day job.