She didn't respond to the "but I will save money over the long run" argument? What kind of wife is THIS.
Unless.... You have already spent that Ace of Spades on something else, which would be unfortunate.
I would try the Joker Card: "Honey, I hate to inform you that all my prior vaping hobbies will have been for NAUGT because they're going to do bad stuff to eliquids, and if they do and I can't vape, well, all my hobbies will have been for naught and NOT ONLY that, I won't even be able to sell off my hobbies, because everyone will be in the same boat."
I've spent a lot of time playing poker, and a lot of time justifying my spending. LOL. If you need more rationales, you just let me know. LOL.
Anna