bought an 850T w. a blown turbo
repair was USD300 parts (second hand) and USD150 labour, also fitted a turbo timer
am currently experiencing some performance problems again but I do not think that it is the turbo even though i have a lack of boost, possibly in engine management or something stupid.
Owned a helluva a lot of cars, volvo's have lots of stupid little problems, annoying, but I drive it hard, daily, and I would definitely consider getting another.
I drive an 850T wagon, throw in the dogs, surfboard on top, 5 friends and it still kicks ass - brakes can get a little smoky though
There's only one way to learn - and your old man should be happy in that if you do make a mistake wouldnt he be happier that you are in a Volvo?