Ive been using NN product for years now and i have to say that for an overall customer experience, half of the problem is their shipping/processing times. I waited over 3 weeks for this to be shipped the first time. Now its an average of 2.5 weeks to 3. There is no good reason why this should take so long and its not worth my time waiting forever for it to arrive, i don't care how nice the bottle looks, or how they formulate it in a lab, whatever- takes way too long to ship. The second someone figures out how to sell USP grade glycerin, and USP grade Nicotine, with a 1 day processing time and 3 to 5 day shipping, will take their business. The real issue with buying these is that you don't know when all of a sudden one day you decide to quit vaping, that can happen in a 3 week shipping time.