You can do this in the Bay Area itself, though in general the closer you want to be to a supermarket, bank, etc. the more you'll pay. If you're west of Palo Alto, Los Altos, Mountain View, Cupertino and cross the 280, you encounter rural areas very quickly. And if you head far enough into the hills, prices begin to fall rapidly relative to flatland prices.
Near Boulder Creek, for instance, you can get 2 acres for $52K that's three miles from a shopping area: https://www.redfin.com/CA/San-Lorenzo-Valley/0-HARMON-GULCH-...
That's 23 miles from Cupertino via route 17 and smaller roads. Of course it helps if you enjoy living in the middle of the woods!
I've posted about this concept on HN before: https://news.ycombinator.com/item?id=9437492