Don't give up! Come back! Come back!
OK. Look. This e-cig stuff is a bit frustrating... particularly if you need a "nic fix" and can't get it. As bad as having a cig but no lighter/fire near you. lol. It just taunts you!
I've been at it about 2 years now. I found a way that works for me. You need to find your way. You can do it, and do it inexpensively.
Try atties and dripping. Or cartos. Get good at it. Save up the $$ and then play around with the gadgets/tanks. That infernal battery can be used with a lot of "standard" stuff.
Also, if you really wish to save up some $$, you may wish to check out the DIY section for e-liquid. Even if you just start DIY really simply, it can save a bunch of cash. It can be as simple as 1/2 bottle of nic-base, other 1/2 topped off with PG or VG and a couple drops of flavoring. Shake. Insta savings!
Whatever you decide to do, good luck to you and good health.