There are kinds of squonker/bottom feeder coming out in 2018. Let me show you some brand squonker Mod/kit to you which is affordable and below $30.

Pulse BF Squonk Box Mod. It’s a follow-up collaboration from Vandy Vape and Tony Brittan from The Vapor Trail YouTube channel. Tony has shared his love for squonking with the world when he released the Pulse 22 and Pulse 24 RDAs. After the success of their really nice squonk-ready Pulse RDA, Vandy Vape appears to be on track to bring squonking to the masses. A well-designed and good-looking squonk mod that is affordable and widely available. That’s rare! The Pulse BF is a lightweight bottom-feeder mod powered by a single 18650 or 20700 battery with an 8 mL food grade silicone squonk bottle — which is soft and ideal for easy squonking. It's only $29.85, get it via this link: Vandyvape Pulse BF Squonk Mod .

Hugo Vapor Squeezer BF Mod is the brand new Squonker Mod. Featuring the Lockable Fire Switch, New Nylon and Fiber Material, it is so intelligent to prevent the accidental auto-fire. The Squonk Mechanical Mod compatible single 18650 and 20700 battery that 510 mode works safely with all kind of tanks. With the built-in 10ml food grade silicone bottle, it is the powerful easy BF mod for your RDA. It's only $26.85, get it via this link: Hugo Vapor Squeezer BF Mod

Arctic Dolphin Crea BF Mod, made from the high-quality ABS plastic that is more lighter than others. Featuring the lockable fire switch, the Arctic Dolphin Crea BF MOD prevent the accidental auto-fire and avoids potential danger. It can easy to fit for the most RDA in the market. Cheaper than any other mods and get it for your RDA. It's only $25.75, get it via this link: Arctic Dolphin CREA Squonk Mod

The Kanger DRIPBOX starter kit system is a revolutionary step forward in vaping systems, bringing one of the first true replaceable and rebuildable dripping atomizer platforms combined with an enormous 7ml squonk capacity all in a convenient, incredibly easy to use platform that brings the dripping experience to an entirely new level. Designed from the ground up with an emphasis on creating the most plug and play RDA experiences to date, the SUBDRIP RDA features one of the first truly replaceable drip coil systems on the market. It's only $24.85, get it via this link: Kanger Dripbox 60W Kit .

Anymore brand squonk deals, you can find it from this page:https://www.urvapin.com/starter-kits/squonker-kit.html