You can buy the smoktech "tank only" at some places for 6$. Then either put a resurrector or boge xxl in it. The boge xxl (the proper length for the longer smoktecch tanks) aren't widely available yet to my knowledge, but soon will be as a lot of people are requesting them.
Hooiser ecig also sells pre punched single 2.0, 1.7, and dual coil cartos for this. While the last 3 cartos I mentioned are flanged, the work well. The first two I mentioned are highly regarded, and are not flanged, but you'll need to punch them yourself. Any "cheap" short tank you buy will need self punched cartos. I actually haven't seen THAT many vendors who pre-punch boge's for you, although they are out there.
You can also use the smoktech prepunched in shorter tanks that aren't theirs, but it will stick out of the top a little more, but no big deal.
The thing about the smoktech tanks is that they are very easy to come by, well built, and you don't absolutely have to use flanged cartos.