I am doing all of the interior woodwork on our house, and I've invested maybe £500 in basic tools: a new chop saw, table saw, router, planer / thicknesser, multitool and a refresh of squares, rules, etc.. All budget items from Titan or Erbauer ranges from Screwfix. OK, if I was a professional making my living from this, then the equivalent might have been 4-5× this price, but for what am I doing this stuff is 90% as good as the best and 400% better than what I had. For example, my new Erbauer chopsaw was half the cost of my old worn-out one that was 15 years-old and is just SO much better. £500 pays for a couple of days chippie time and this kit has saved me far more than that.
Moral: if you are going to do a job yourself then you need to be properly tooled up to do it. OK, spend £100 on the Chinese or east European tool that might have a few flaws and wear out in a couple of years rather than the £400 trade best-in-class equivalent, but you'll probably be using it on only one house, so what the heck. Don't try to do without the tools that you need to do the job. It's false economy.