17 bucks for a 5 cartridge refill kit of menthol that tastes like cob webs, I thought I would give blu a try now I am sorry I did. I will go grab some e juice from the smoke shop and stick with that lucky for you guys I was out. blu is all fancy marketing, overpriced, and horrible quality. the cartridges are old and dried out because nobody can afford to buy them and the fact its in a flimsy sealed pack that isn't even airtight, don't even bother.