COAs are posted on all campus websites for California publics. It's common knowledge that UCs cost more than CSUs. Some of the areas are inflated (some could even not be enough for what you normally would spend) on each COA so you'll have to look at the real costs (fees). Room&board is also part of the real costs, but this depends on where you plan to live (on campus, off campus, commuter).
UCSC: UC Santa Cruz - Financial Aid - Welcome!
I'm not sure how knowing the COA tells you how its program for a specific major compares to one of CSULB... Just tells you if you can afford it or not. And no, I don't know anything about either program, but hopefully someone will come along that does