You can find bargains, but you have to have sufficient knowledge to distinguish them from the dross. Good example is the used tweezers I bought. They came as a set of 8, all Swiss, mostly Dumont. There were 4 other lots at the same time, but I knew I wanted a good #5. I studied the pictures exhaustively, set up my snipe, and won. They are SO MUCH BETTER than the incredibly cheap ones I started with, but when I started I'd have had no idea how to choose the ones I wanted.I just prefer to learn watchmaking with a basic set of quality tools. I don't think you would save much by buying used tools a la carte and paying separate shipping charges and deal with potential problems.
Screwdrivers - I've gotten good service out of a cheap set I bought, but only because I used to sharpen broadheads and hunting knives and had a feeling for stoning the tips. I would have greatly preferred to start out with AF Switzerlands, at the least.
The problem was, I was not sure I'd have any ability to do the work.
Now, looking back, I've been able to pick up a dozen or more nonrunning or barely running watches on Ebay for very cheap that I could put right. It would have been worth the expense to buy the best tools. But if I'd spent that much and turned out all thumbs? No!
Bottom line is as you recommend - get the best tools you can afford. And the lists you've compiled are excellent for that.