This is a Very Simple, Easy and no mess way to refill your electronic cigarette cartridges, a 12 year old can do it. Even if you have no desire to refill your own, watch this video and it may change your mind. You can do this for just pennies compared to buying prefilled cartridges. After testing out many ECIGS I am comfortable in endorsing Prosmoke. They have the best VG flavors with a good throat hit. you can check out the pricing on their starter kits here www.prosmokestore.com you can contact me at [email protected]. for any questions. thanks