not really. if you dont know how to do amore complex jo properly and you put the car back together wrong, itll end in tears. having someone who has done it a million times before looking over your sholder is heaps better, cause if your gonna do something stupid they step in and correct you. and you always know the jobs done right.
but yes, any decent mechanic will be spending thousands on tools. if your just a home mechanic then a bigger kmart kit might do, but if your serious you start looking at brands like snapon, kinchrome, CGL ect