Does anyone know of cheap plumbers in the Bay Area?

Most disposal lines can be cleared with a 1 hour service call. When you call asking for prices, be aware that there are a couple of companies in the Bay Area that own over 100 phone numbers each. They buy the numbers from guys that go broke.

I recomend calling one of the national chains, as they stand behind there work. (but not on disposal lines)

You don't want a plumber, you want someone like

Root Rooter, but not necessarily them. A couple of years ago it cost me $106, in Martinez.