Check out the army tank in the suppliers section. Variable Volt and Bottom Feeder combined at your price point.
For under $50 you can get a complete 3.7v box mod with batteries and a charger from Steve and he ships up here.
http://www.e-cigarette-forum.com/fo...uality-3-7v-box-mods-19-5v-box-mods-28-a.html
I ordered one for my Dad and a second one for me just this past week.
Last question the 3.7 box from steve will use any 510 connection right? Thanks guys