Price on devices differs due to many factors. There is such a huge selection of vaping mods on the market currently and with every new one that comes out, the technology continues to advance. The higher the build quality, materials used, power output, battery capacity and many other features can determine the price of a device. Sometimes it is simply that one manufacturer to another will price their device higher but usually you will find the more you spend, the better the quality of the device you will get. There are a few great exceptions to this rule with mods like the Nunchaku 2 Mod from Uwell and the Species Mod from Smok being not too expensive but have a huge selection of features and the performance to match!