John is correct, exception NO ONE with any BRAINS is driving into mexico these days...
In fact, the US state department has a major warning on anyone traveling to mexico.
California has sales tax on almost everything except unmade food.
Sales tax varies across the state from 8.25-10.25%.
9.25% isn't bad!! Los Angeles & San Fran era is 9.75%. the OC is 8.75%.
Pico Rivera, a small city in LA County is 10.25%