“This batch of cartridges are not as concentrated as most. Very difficult to extract the contents, and as a result you don't get the long lasting use of each cartridge. Very disappointed in this shipment.”
“I do not check my email every day, so I was delighted to open an email from 21st Century Smoke concerning an extended sale event. Found out on their website that the cartridges I already have on auto-ship were included. Glad I was able to order more at a lower price. Yay for me!”
