I was wondering the same thing when I was looking for an e-cig in San Francisco. I found that stores that are dedicated to selling tabacco products usually will have some sort of generic brands, refills and liquids as well.
I am sure you will find them in Sac as well.
I would only recommend to purchase from them if you are new to the e-cig scene to try them out. You will find that they are way, way over priced over what you will get from the forum suppliers here or on any supplier on the net. Expect to pay 2x more for the same thing you can get online.
Hope this helps.