Vapure has a jar fulla juices on the front counter. i think it was $2 for 5ml, and $4 for 10ml. they are also developing a new line of San Diego sourced juice. ask for a sample while you're there.
also liberty-flights ships from the same location. so if they don't have what you're looking for, you can always order online, and pick up at the store.
also, their are some head ships and liquor stores around they sell
eliquid. mostly johnson creek i think. call around!