i ordered from goodprophet. got a pack of the adapters and the last pack of 5 it looks like of the 36mg vanilla carto's. they did not have any blank ones in stock so vanilla looked like a good alternative to refill with my juice. problem is that no companys have both the adapters and the cartos in stock at the same time! maybe next month after their new year is completely over stock will change. the cartos are so cheap compared to the normal attys. i would say that you will not have to buy adapters again unless you lose them, and i think i will stock up on cartos as soon as i find the empty ones. i'd say around 20 would prolly last a good 6-8 months, maybe more if you get the performance that Dr. Vapor is showing on his vids. the learning curve on ecigs is pretty curvey! once i find that one perfect combo, that is what i'm sticking to. like i said the chuck, 18650 batts, 510 atty with the auto drip funnel mod, 808d cartomizers refilling with the carto condom method, IMHO think will be the best for me. i really don't see how you could get any better until they come out with an ecig that holds a 30ml bottle and auto drips via a microprocessor!!!