If you are going to be working on "modern" bikes only (last 20 years) you will not need to spend as much as more things are standardized. If you are a c/v guy then you will find more and more specialty tools are needed. I agree w/rekmeyata that you will get better quality tools if you buy them separately however you will spend more, but if you keep them forever and dont need to replace it....
I have not bought a trueing stand or spoke wrenches because, well, I dont build wheels. once every year I bring my wheels in and have them re-tensioned and trued// $15 a wheel, much easier. I do not have a headset race remover/setter as I would only need it once every few years. I bring this job to my lbs as well.
I do have a few different bb/cassette removers, a chain whip, crank puller, chain tool that rarely get used
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2010 Kestrel RT900SL, 800k carbon, chorus/record, speedplay, zonda
2000 litespeed Unicoi Ti, XTR,XT, Campy crank, time atac, carbon forks