Will COA be the same across UCs?

Merced is offering me 46k/yr COA and that’s NOT happening 😭. My safety rn is Cal poly Pomona which I got into (don’t know COA yet) but I’d love to go to UCSB. but if it’s for the same price… no.

Parents make a lot of money but we live in one of if not the most expensive places to live in America so don’t have a lot of cash laying around for my college.

Thanks!