Fastech has a Hana Modz DNA30 clone for $56, it comes with an 18650 or 2 smaller batteries. There's a cloupor DNA30 box that is around $80, and you can find quite a few handmade dna30 boxes for between $150 and $200. There's the iPV2 that does 50 watts(just got one and loving it), and supposedly the iPV3 is being released by the beginning of next month. It'll take 2 18650s and have an ouput of 100 watts. They claim they'll release firmware updates allowing it to go to 120, then 150 with the final update. I read Cloupor will be releasing a 50 watt mod soon as well, but it'll be cylindrical, not a box.