Went by LAPG today and they have a smallish flashlight display (they've moved other things around, too). Not sure I'd make the trip all the way up there from Irvine unless interested in other "tactical" type things as well. I don't recall too many places having a lot of variety of flashlights, etc., in Southern California. Aside from Surefire (and not sure they have a competitive retail outlet, most manufacturers won't undercut their dealers) and Maglite, traditional and not very cutting edge, it seems, there aren't too many makers I'm aware of in the US for the typical consumer sorts of lights. Since most of the brands here are imports, I'm not sure there are a lot of bargains to be found in stores. Online might be worth exploring depending on how long you are here and if deliveries can be arranged for you. One thing to be aware of is California has a sales tax so if you buy from a source with a business presence in California, tax will be added. About 7-8% or a little more depending on local additional taxes. So if you order from Amazon, for example, or buy locally, there would be tax added. If you buy from out of California, like B&H Photo in New York for delivery to Ca., there would be no tax typically but then you deal with the possible problems of deliveries, charges and time delays, etc.
Many vendors are hesitant to deliver to other than a permanent address for a cardholder.