Zer000 there's a place in calle real that you can transfer. i believe they charge you $57 for transfer. they sell custom ammunition.
i do not think they're really willing to help you to get the best deal. i asked them and i got an email saying that they would do it once or twice per year but you have to buy their ammo. i guess they frown upon this practice. they say they don't make profit on transfers, i say BS. $57 is more than what CA laws allow.
there's another gun shop in ventura, i haven't really try that one.
i got my usp45 from far west, not the cheapest place in town but the people seem more willing to talk to you. rick in goleta valley has the lowest price, but he doesn't have anything in stock, you have to order.