They don't last long. They might contain about 1/2 a ml of juice and people vape 2/3-5ml a day.
Once you get your kit and figure out what flavor you like and a good nicotine strength for you- like I said, get a bottle of juice and fill them yourself. They taste better, they hold more and it's much cheaper!
That's when the fun begins! There are quite a few juice vendors in the NJ/PA/NY area so you'll get orders quickly through the mail.
So theoretically if I bought the juice and it's a 30ml bottle I'd get about 30 cartos from that bottle? Can you recommend a site or where I can find a good vendor in the area?