the difference from a korean PRS SE to an US made Paul Reed Smith is indeed huge in both build quality and tone (not to mention the woods grain, finish and hardware)
can't measure that by comparing proportional price numbers
if you were comparing the raw materials, hardware and labour costs, then an american Custom 24 would indeed be worth 5x the factory cost of a korean made one, but saying one is 5x better than the other is pure subjectivity
PRS (USA) is one of the very few mass producing brands that only puts out top luthier-like quality guitars even in their lowest ranges
on the other hand, there's many korean made guitars that cost half of a PRS SE while offering the same quality and features, so the price x quality argument shouldn't work for the SE lovers as well
personally, I'm a Les Paul guy, but I've never seen a Gibson with the build quality of an US made PRS
and I'm not bashing Gibson by any means
I don't believe the overpriced collector models are any better tonewise, although they may have unique finishes or some snake oil rare tonewood
they are expensive cause they are made for people that will pay whatever absurd price they put on
in the used market you can't beat the quality of a regular PRS McCarty, Custom or Singlecut in the US$1500-1800 range
one could argue that a used SE goes for $400, but I'd rather have one Famke Janssen than four Tilda Swintons :lol: