I ordered toner from these guys. The first cartridge was streaky. I tried returning it and their address had changed. I put in the second one and it lasted for about 50 uses instead of 6000. I called to send them both back and they said it was past the 90 day warranty period and they could not give me a credit or replace them. You either need to sell good products or have a warranty that will cover things when they don't work. I hope someone luckier than I finds these reviews before ordering from go4supply.com