I am really surprised by the ratings here. I was considering using another company and decided to investigate reviews, which were not as poor as the ones for Go4Supply and decided to look at them as well. I have been using this company for over 3 years. I always order 6-10 cartridges at a time. I usually have about 5 bad cartridges a year (out of approx. 30)... considering the savings I can't complain, this still puts my cartridge cost annually a ton lower than from other sites or OEM cartridges. Once, our single other cartridge did not come in with my order of 10 standard toner. I called and they immediately sent it out. I have had no problems with this company. The only reason, I even started looking elsewhere is they did go up (after 3 years) on the price of my toner. After researching, I am going to stick with them. I sure am sorry other people have had bad experiences, but mine is quite the opposite.