I just received an order I placed with madvapers.com and, while the items delivered were precisely the ones ordered and the shipping was very fast, I do have one issue that, in my opinion, needs to be addressed. Since I was unable to find any other discussion on the subject myself, I was hoping to start one for the benefit of the next person asking the same questions I had. Anyway, my issue pertains to the Halo liquids sold through the mad vapers website. Having read a plethora of positive reviews about them, I decided to get a 30ml bottle of their Prime 15. As I was placing the order, I was asked to select a "throat hit". Tempted as I was to select "extra strong" from my list of options, I suspected that this "throat hit" was really just code for nicotine level, since there seems to be a great deal of ambiguity surrounding the legality of selling nicotine-containing liquids in Canada. When I first gave up smoking last year I bought some 24mg/ml liquids, returned them, started on 18, dropped down to 12 and am getting ready to phase that out and try using 6. Afraid that I might inadvertantly order a much higher nicotine concentration than intended, I decided to check the halocigs website to see how the mad vapers "throat hits" compared to halo's official nicotine levels. Sure enough, both sites list five different levels (none/zero, low, medium, high, extra high/strong) so I decided to order "medium", which halo lists as 12mg. What I received today was a big blue bottle of 18mg/ml, a detail that is listed on the back label in a font that's about a millimeter thick. Good thing my vision is sharp! Now, I can't say whether this was a simple error or whether mad vapers has a different way of measuring nicotine content but what I can say is that their system is confusing at best and downright dangerous at worst. I think people need to know that HALO JUICES ORDERED FROM MAD VAPERS DO CONTAIN NICOTINE and lots of it, apparently!