Los Angeles is a treasure trove of interior design shops...if you're willing to shell out the big bucks. While it is very possible to outfit your home in mid-century wonderfulness on a dime, it takes A LOT of searching, hunting, and sweat to get there.
Cain Modern is an antique/mid-century modern furniture shop in West Hollywood where I would shop for home interiors if I had a celebrity salary. But for now, I just admire their wares and go hunting on Craigslist.