I'm also fairly new and the start-up was mind-boggling.
I pace myself by the week and try to catch the sales.
I went through hell trying to learn how to refill to save a little on cartos but, it is possible to spend $30-$40/wk on supplies and if you would
buy a carton of analogs, with tax, you'd spend a tad more to a ton more, depending where you live. Cartons of analogs are close to $50 and up in LA w/ 8 packs. If you were smoking more than a pack/day a carton wouldn't last you a week.
If you click here
V4L Sig Generator it brings up a page where you can use their calculator and make your own sig, like you have, which initially shows when you break even from the start up costs, then keeps track of how much you save. You can also set it back a month to see where you'll be in month on the test page and keep it accurate in your sig.
If you add your 1st e-juice stocking order to the start up number, it will take a little longer to break even but, depending on how much you smoked and the cost of analogs where you live, you should eventually see a savings.
Mine's a little messed up but, it also lets you redo it anytime you need to.
It took close to month for me to see it 'break even', about as long as it took me to get the refilling down (it's a trade off - refill or empty ashtrays and clean up filthy ashes) and decide on the juice I could vape regularly. The latter will help you not buy everything in sight & start stocking. I'm at that point and getting it under control.
There's no way to put a monetary price on getting 4000 chemicals out of your system but, you might also want to go through your closet and add in all the clothes with burn holes, add in all the sprays and stuff to hide the smell of smoke, burns in carpeting and car seats, etc., and you should feel better about the start up cost fairly fast.
It is hard to see in the first week. Try working with your sig thing- adjust it as needed - it helped me alot. I was cranky the first week too. When you find the flav you like and get used to it all and can only focus on vaping, that will also help you feel better.