Big time money on tools and professional tools are not fucking cheap. I have about $1800 in measuring equipment alone that I had to buy out of pocket. Add in wrenches I can put my entire body weight into all day long, a drill index, multiple top-end hammers, screwdrivers, grinders, deburring tools, punches, clamps, handheld grinders, etc. etc. etc.
I think mechanics have it worse though. In my shop I mostly only need imperial tools, at least.