I too had a job in college. I had a job at 16 (two actually) and it wasn't so much my parents weren't willing to help, I just wanted my own money, to do with as I pleased.
With that said, I'm not sure how hospitable the economic environment is these days for kids. I wanted my kid to get a job when he came of age and I was shocked at the number of employers who don't hire kids anymore (they're an insurance liability for one). I'm just happy he found a part time job at Dollar General meaning he can see to most of his own needs.
But, our economy is AWFUL. Make no mistake. There are many folks (adults) who have to get by on one or two part time jobs (no benefits to pay out either) and Tucson has been deemed "The most affordable city to live on a minimum wage budget."
That's NOT A WINNING thing, and it basically means everything's cheaper here as no one can afford to live. I cannot wait for my kid to move on to greener pastures.
I'm not quite as harsh about vaping, and I understand your desire as a parent to help your kiddos stop smoking (although, unless you funded their smoking habit, I don't see why they can't learn about vaping themselves, and choose their own vapes and etc.) With that said, I do understand your desire to get them in a more healthy place, and honestly, I wouldn't go with a pod, I'd get an inexpensive other type of MTL system, get them to select one that appeals, (whatever it winds up being) and then let them know, moving forward, that coils an juice is up to them.
In fact, I'd encourage you to make them come to ECF, describe what they need/want, and get advice directly. You are doing way too much of the work here, IMO. If they wind up with setups that they can actually afford themselves, well, they may have more buy in.
I don't honestly care if you pay for their vaping habit a while if you can afford it, it's your household and you can do what you want.
I DO think (in terms of continuing vaping) you should encourage their more active participation, so that in the future, if you become unwilling to pay their vaping costs, well, at least they know what to do and how to do it. Also, they may return to smoking. That is their decision, and now they know vaping is an option. Continuing to buy their vapes for the rest of their lives doesn't seem tenable to me.
In college, I worked as a waitress in our "self-created" café, and I drove the drunk bus. They were both fun activities, expect for the time I lost a contact lens my driving was not oh so great that evening.
But there are usually plenty of jobs to be had by students surrounding or even inside their college. I'd encourage you to boost their own productivity, AND their own ability to "fund" whatever it is they're doing. Etc.
Anna