Once you get some e-liquid you can cut down on your cartridge use. No need to throw them away when you can just refresh with a few drops. I've ordered the liquid both from e-cig.com and from ebay. The ebay seller is in the U.S., so you can probably get it a little faster. (Search for "smoke juice") It's a little more expensive, but you don't have to worry about it being seized by customs, and the shipping is cheaper. It's the same product as that sold by e-cig.