Looking for Kaffir Limes

After a trip to Thailand, I am very interested in making scratch-made curry pastes.
I have found Galangal and some other hard-to-finds at places such as Asia Market Thai Lo Foods, but I cannot find Kaffir Limes for the life of me.

I will start growing them myself, since they are zone 9, but in the mean time, does anyone know where I can find them?