First you need transition from cigarettes to ecigs. You’ve got to be at 0 cigarettes. Disposables CAN do that part (though it’s a pricey way to do it). you can do that with other hardware too though.
disposables can be made really really small, though they aren’t always. Also they have auto switches (which break eventually so they’re good for disposables). If you want to spend as little as possible total and don’t mind fiddling and gunk, then RBAs are the best bet. Cartridge coils and pods are of increasing cost, (by quite a bit) but stop the putting your fingers in goo Thing. Pods sometimes do auto and can be not much more expensive than cartridges. If you want to do cartridge coils or RBAs though you’re going to have to learn to use a button. It’s not difficult.
once you’re off the cancer sticks, you vape for a period (which can be a day, a month, a year etc..) then start slowly reducing your nicotine content. Disposables CANNOT DO THIS PART because you can’t titrate the
juice. Basically you manage the nic level as slow or as fast as you want until it’s zero, then vape zero for a period (as long as that needs to be) at that point most people just spontaneously stop. Some have to decide to, but with the nicotine gone it’s not difficult. Success rates last I looked were over 80% with this method. It’s what ecigs were designed for originally. It turned into other stuff though. Cost per month go: disposables (actually fractionally more expensive than cigarettes) analog cigarettes (whose cost is generally in the hundreds of dollars per month. It varies a lot though. I’ve heard $600, I’ve heard $200) then pods which aren’t quite half of analog cost, then RBAs which is something like 1/5th of that or less. I spent about $30/mo with an RBA from a habit that was about 3 packs of Lucky strike straights a day. Those are what? About $5/pack now? That would come out to 1/15th the cost.
Its continuing cost vs. up front cost though. I suspect it will take me 2.5 years to get to 0. So I save a bunch with RBAs. To do the cheap way right though you need an rba kit,
juice makings, batteries, and a charger for those batteries. The kit is going to be about $60-130 for a decent one, a good charger will be $30 or so, and juice making (which is simpler than cooking) another $30-150. So initial costs are higher. After that though it’s a lot cheaper. There are som economies. You don’t have to buy a charger or more than 1 set of batteries at first, so those tWo costs together can be about $6 total. The kit price is fixed though.
So basically you need to be a grownup with a job to do it.