Most all my stuff is pre-boost, newer or otherwise. I never went with the "one chain ring for all" hype. I like a straight-ish chain line so all my frames, wheelsets and drive train parts are pre-boost 10 and 11 speed, doubles and triples. So I have saved a ton of money, buying new old stock parts, and anything from that period on craigslist. But I have spent some coin for sure, just not astronomical amounts for the lastest. I was able to get a couple of wheelsets built recently with pre-boost hubs and DT-Swiss EX 471 rims. And I have several more sets I bought used.
The most I ever paid for anything bicycle was my Enve All Mountain carbon wheels which I still have. They were 2700.00 US in 2013. I never used them in the dirt and they are still in fine shape, with king hubs and sapim flat spokes.
Besides mostly made in the US parts, I do have a fair amount of UK bike parts. The legendary Brooks saddles, I have several, even the TI ones. Then there is Hope, of which I have one bottom bracket, and at least three sets of wheels with Hope Pro II Hubs. Very solid parts for sure.