I charge around £40-50 depending how long it takes to static tune then we go out on the road to check and make sure its 100%

Depending on what system your using i will map it on the road using dett cans and a laptop. If you have MFi etc.. obviously no laptop involved.

A power graph on the rollers costs £30 extra

I am in upminster in Essex.

HTH
Regards
Jano