Check with the BON to see if you need a Refresher Course or not. If you do not, yay! If you do, the best I found was through Chico State, their Refresher Program was about $900, all of it was online except for 3 days of classes. If you do not need a refresher course, my vote would be to take an RN Post Graduate Internship. There are a few in Northern California. One is through Chico State called RCNP Program, you basically do a 6 week internship in an underserved hospital and costs $1,000. Another choice is United Heart Training Center in Fairfield. United Heart just started a Post Graduate Emergency and Trauma Course Certificate (70 CEU's, plus TNCC, ACLS, PALS, BLS) and includes a 6 week Emergency Department Internship in the ED at NorthBay or VacaValley Hospital. United Heart is wicked expensive, but totally worth it when you get that job offer. Cost $5,000. If you want any further info, message me. As a reentry BSN myself, I have done pretty much everything I can to get into acute care.
Best of luck.
If you are a new grad you can check with Samuel Merritt's Transition to Practice Program. A few other colleges have a similar program, which I cannot remember their names. I believe one was in San Francisco.