Solution 1:
California Sales & Use Tax Table
Tax rates table by county, city and zip codes,
use it anyway you desire
Compliance Level: 
Minimize the risk of nonconformance
Cost: $89.99 per year
Solution 2:
California Sales & Use Tax API
Connect to genius geocoding engine to get
REAL TIME tax rates for your application
Compliance Level: 
100% California Sale & Use Tax law compliant
Cost: $0.10-0.12 per request
Solution 3:
Custom eCommerce Solution
Turn-key website with shopping cart and
California Sales & Use Tax API built-in
Compliance Level: 
100% California Sale & Use Tax law compliant
Cost: Custom Quote