In case you had any doubt...

...prices are higher in California than in most other states. The chart above [click to enlarge] was prepared by the Bureau of Economic Analysis of the U.S. Dept. of Commerce. "Prices" in California are 12% higher than the U.S. average. Note, of course, that there is likely to be considerable variation within locations in California. But when UC pay is compared in nominal dollars with other universities, there is no adjustment being made for the higher prices in California.

The chart comes from http://www.bea.gov/newsreleases/regional/rpp/2015/pdf/rpp0615.pdf