There is no vape shop nearby, any suggestions for brand or website? Why not recommend Fincig?
Fin sells basically three products: a cig-alike, an eGo style battery with disposable cartomizers, and something they call their Advanced Vaping System. The AVS comes in two nicotine strengths and the cig-alike and cartomizer systems come in only one nicotine strength. You said you were using the stronger strength, so (please correct me if I'm wrong) it appears likely that you've been using the AVS, which comes in either 1.8% or 2.4% nicotine. These concentrations are usually expressed as mg/ml, so 2.4% translates to 24mg/ml, which is fairly strong stuff.
The AVS is nothing more than a generic eGo type battery and a screw-on, pre-filled, CE4 clearomizer. This is about the cheapest possible set-up on the market. And Fin doesn't tell you anything about it. What is the coil made of? What kind of plastic is the tank made from? What is the wick made from? Is it a top coil or bottom coil? What's the resistance? They say the liquid is made "primarily" of water, nicotine and flavoring. So there's other stuff in it. What other stuff? I'd sure want to know.
But let's say they're telling the truth and it's mostly water. Water is not a good primary ingredient for e-liquid. Water boils at a much lower temperature than PG and VG, water doesn't carry flavor nearly as well and it doesn't produce visible vapor nearly as well.
Finally, the clearomizer is overpriced. They charge $6.99 for one clearomizer. You can buy a 5-pack of CE4s for $8.95 or less.
There are lots of good on line retailers. I've had good luck with MyFreedomSmokes, DirectVapor, ViperVape and MyVaporStore. There are dozens of other good ones which you can check out
HERE on this forum.
For a beginner's set-up there is a bewildering array of options, but I can only recommend what I've actually used. I think you'd be happy with a Aspire Mini-Nautilus tank or a KangerTech AeroTank2 on a Eleaf i-Stick 30 Watt. Those two will run you a total of around $50 or less. For a little more money you could get a 40 or 50W, but 30W should be sufficient. You'll also want to buy some extra coils and some e-juice.