Jon is correct. You will give up something if you want cheap. Riverside, Orange, Los Angeles and San Diego Counties have the Mediterranean climate you need for perfect fig heaven. Within each county are different sizes of towns, agricultural areas, and dozens of micro climates.
No matter what town or city, you will have your good side and bad side. Property subject to gang invasions will be cheaper, but figs will still grow. Property that is just county property, unincorporated and not in a town or city, will be cheaper, but you might be on septic, propane, might need to dig a well, and have a long drive to the grocery or gas.
A good realtor will help you find what you want. Trulia.com and Zillow.com list dozens of properties, but many of those have expired long ago. I use keller williams just to check property values in MY town. All their listings are current. Good search engine for all parts of the country.
But you already knew that.......... :-))
Suzi