:D
That said, American wine—and California wine in particular—has a bit of an IPA problem inasmuch as there is a lot of overpriced, overproduced swill being priced exceptionally high by international standards.
I get the swill at a discount :) "The best wine is the wine you like best." Best deal I recently got was a few hundred bottles for under $1k, <$5/bottle. Easier than the trek to a Trader Joe's or Costco, ymmv (and I don't feel bad throwing a bottle out if it isn't for me, versus a $100+ bottle).
Not just American wine... wines from any region have always been more expensive in the US.
Quick poking around Google... Italy, France, and Germany all have mid-tier bottles of their own domestic wine for far less than we (in the US) get any wine, domestic or import.