I also think that being able to breathe and not stinking like an ashtray is worth every penny I've spent so far.
You can't really put a price on good health.
Most of us didn't take up vaping to save money. We started vaping as a healthier alternative to smoking. I truly believe that's true.
Once you find your daily gear and a backup, your subsequent costs should be just replacement e-liquid and replacement coils. For me, those replacement costs are minimal. I've managed to drop my nic needs to 3mg, and could probably vape unflavored vegetable glycerin if I needed to. A 177ml bottle of USP glycerin is under $4 at
Walmart, and even cheaper if you order larger quantities from a
supply house.
I make my own coils for my RBA for less than a couple dollars a year. A spool of kanthal wire is about $8 and will probably last me 3 years (homemade coils can last 2 - 3 months). A $1.50 bag of organic cotton balls for wick will last you a year, compared to $3 for each factory-made coil that may only last a week or two.
Information Resources for Your First RBA
There are ways to cut vaping costs dramatically if you are willing to DIY your e-liquid and wicks/coils. After being a smoker for over 30 years, since becoming a vaper, I no longer cough up a lung every morning, no longer get long bouts of bronchitis every year, no longer get short of breath by climbing a flight of steps, and my car/house/me no longer stink of ashtray. Really, how can you put a price on THAT?