In the last year or so I got into the hobby of metalworking, as in the benchtop machine-tools.
This provides a good perspective on "what things cost from where", as you can often find tools and accessories that are functionally equivalent but made in different countries.
The differences I've observed are WAY more than 15%.

Most of what I have is Chinese-made, just because that was what I could afford.
The slightly-better-quality stuff is often Taiwan-made, but costs ~1.5X what the China items do.
The top-quality stuff is US, Germany or Japan-made, but usually costs 3-4X what the China stuff does,,, and sometimes costs 8-10X or more what the China stuff does.

The level of quality in the US/German/Japan stuff is much better, it's true--but for a hobbyist, the China stuff works just fine for a lot of things.

There's always guys on metalworking forums saying how dumb it is to waste money on China junk and how you really should only buy USA-made tools, but I couldn't afford the hobby at all if I had only bought the top-quality stuff.

Additionally,,,, if for whatever reason you happen to want a bench-top mill or lathe--you are almost forced to buy Chinese or Taiwan, since those are the only sources of such machinery nowadays. The last USA company that made bench-top mills stopped making them in 1961, nearly 50 years ago.
So,,,,,,,
--You can pay top-dollar for a restored US-made one on ebay (on the occasions when they come up for sale, which isn't all that often), or-
--You can buy an unrestored US-made one on eBay and then spend the next months/possibly years also looking for the pieces to get it working again (which you may never find), or-
Or you can order a China-made one and a truck drops it off at your house in a week, and most likely it will have all the pieces included and work right when you plug it in.

For me the choice was easy: I wanted to build stuff, I didn't want to play junk dealer. If there was a comparable US-made product I would have considered it, but there was no such thing.
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