Personally, I feel you need to spend just over $20 to get a quality cartotank. Going cheaper is like anything else, you often get only what you pay for. I provide a couple of suggestions for inexpensive tanks.
My Vapor Store Polypropylyne DCT Tank $8.50 gets you the tube and steel endcaps. You can choose which cartomizer and drip tip to go with it as you choose. Should you rather get a complete tank kit
PolyPropylene Complete Cartotank Kit for about $21 you get the above, plus a metal drip tip and five cartomizers of your choosing. The polypropylene tube is safe against the tank-cracking juices.
For a step up, the pyrex
IBTanked - Get Tanked With Us! tubed stainless steel tanks start at $20 and go up according to add ons you might want. A nice selection of drip tips and pre-drilled cartomizers are available onsite.
Choices in cartomizers for your tanks will basically be between Smoktech, Boge, and Ikenvape. Use the below graphic to decide which cartomizer best fits the tank you choose. Tanks are of either standard or XL length no matter where you purchase it.
I have several articles on cartomizers and cartotanks in my blog. I recommend spending some time reading them prior to your purchase.
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