No tuner should never charge for a re-tune full price full stop! if he does his a rip off an go to another tuner.

Retune could just be a simple touch up, might not even be a hour job lol, they should only charge u on a hourly basis after the main tune as they already have ur map an can tweak it, ofcourse unless u specify to them u want a completely new tune with new engine/mods

imo go find someone else..

word of advice, if u do choose a new tuner, and if they choose to re-tweak ur existing map or upload a existing map walk away ASAP!!!! no tuner should ever touch someone elses tune or map, a real tuner starts off with a fresh base map an work from there, an that way they know exactly what they did on the map, so should there ever be a problem it doesnt go back to the tuner, than back to the previous tuner etc etc