I'm by no means an expert in this, but I was looking for a bottom feeder a while ago...
So: there is a Boge Revolution V2 - cheapo device, looks flimsy and probably doesn't last long; maybe you can look into it
A little more expensive than $60 is the Vapage Vmod 2. Here is a good review:
Vapage VMOD v2 - YouTube
Also -
V-MOD vs. Boge Revolution V2.1: e-Cigarette comparison
Other feeder mods are more expensive, but their users swear they are worth every penny in durability and non-leakiness and amazing looks....
Reo obviously has a cult following, so do others such as the Grip and Monkeybox... There is a subforum dedicated to feeder mods, maybe you should look around there -
Liquid Feed Mods Discussion
Hope someone who knows more pitches in.