Boge cartos can be bought at crystalclearvaping for around $7 with free shipping. juice is the culprit when it comes to carto life... I used to use juice from tasty vapor and after one day it would start tasting stale. using my own diy juices, I can get at least a week out of one carto (most of the time more) before the performance starts to dwindle enough that I start thinking about opening a new one. I still use tastyvapor juice sometimes but I only use it in a carto that I've been using my own juices and I know I'll only get one more day.