You can get a DSE901 from Ruyan Direct for $29. But as I said before, I would definitely get the manual battery which has a button you push to heat the atomizer as long as you want. With auto battery types, liquid will eventually get into the battery and gum up the switch and then you have to keep buying new batteries. I think e-smokey has the Dura-C/510 (they are the same PV-manual battery) for $59 and I think EastMall has them for $39 but shipping is more. If you want better performance with less problems, get a manual battery type. The more expensive ones have more power, much longer battery life and the batteries cost $2 instead of $15. So there is pros and cons to either path.