The inexpensiveness of foreign component dealers relative to US dealers.

"I recently had a friend scream at me for buying components that aren't "American". "

Yeah, that's funny, but there is one facet of truth to it. You cut out an American that was making money by retailing, not manufacturing (and so am I so I am not pointing fingers here). No Americans are making money these days manufacturing simple electronic devices. All that work is in Asia now.