Vash, I don't know of any good deals on it since I stopped looking for it once I got one. I do know however that I recently saw a kit for it on Vapor beast. For some reason they call it the Rapture mod, a kit with batteries and a charger. Dunno if you need that, but it's $75 shipped. Which isn't that great a deal. Seems they are sold out most places.
I can tell you I own the Drawtube and use it my printing shop every day. I wouldn't want my other, more expensive mods to fall to the concrete. I have held the KTS in my hand though and the difference is substantial. As always YMMV. Ones man treasure is another mans trash I guess. I would say that out of all the "cheaper" mods, the drawtube out of the box, is the best one out there that I have messed with. It's kind of under the radar. I guess it's a bit more the drawtube in kit form.
Here's another review on it. For the record I did sand the contacts down to brass, I don't notice any difference. Be warned, mechanical mods can be a slippery slope into debt

. I however try to get the better one that I can afford, just feels like I save in the long run. Also- Don't get too caught up in the numbers out there. Get what you want and enjoy it!