I use to go here, but when I tried to exchange a cartridge the store manager asked me to go outside and test it again. There are signs up front that tell you not to smoke on the property, and I think it's agents the law. So she says she'll exchange it, I wanted a more expensive one and she said no I cant do that. I was willing to pay the difference but she still said no, all she did was resight her store policy and that's all I can do. I had a gram cartridge for $40 and was asking for a .5 gram for $45, I couldn't understand that kind of stupid store policy. I thought you were in business to make more money, so it's the last time I'll go there.