It depends on what they call full service. A REAL full service (i.e. full breakdown, cleaning, reassembly with oiling) takes a few hours, and is about $200+ CDN. It seems expensive to some that haven't had a gen serviced before...but remember, this will give you 5 years+ of RELIABLE service.
Some simple dip lube servicings by people who are not really versed in 7750 movements (gen or rep) can be had for $50 CDN and are not recommended by The Zigmeister at all.
Read my Noob Guide for some links to power reserve and other A7750 posts:
Thomson Highway on this board can do it in Europe.
The standard/benchmark is around 40hrs of power reserve. I have one that needs servicing that only lasts around 30hrs...I'll get it done in the future as I consider 30hrs good enough for now.