It is for $35 and the iJoy Combo RDTA 2 features an incredibly innovative and sensationally convenient e-juice filling system. I really liked this and I did not have to remove the top-cap or unscrew the base to add the liquid. This gem is great for filling the side-positioned filling port. One of the most unique and groundbreaking features of the iJoy Combo RDTA 2 is its cutting-edge modular hybrid configuration. This remarkable device can be used as a standard rebuildable atomizer, which enables you to create your own builds, or can be used in conjunction with pre-made atomizers, which include coils and organic cotton. I really find it great.