I have been buying cartridges from this company and have had a few cartridges that did not work. They just sent me replacements...and no problem. Unfortunately, their customer service is not good now. I wasted 3 days sending them photos of the error message,printer and cartridges... they kept asking for more info. I dealt with a real person today and had to argue with her regarding my problem with a black ink cartridge not being recognized. I already had to go to Staples and buy a genuine Epson cartridge, just so I could use my printer. All I wanted is for 123ink to send me a new cartridge...what a pain. After all the things they wanted me to do and all the time I wasted, now my printer has an error 'Maintenance Box End of Life' (from all the printer head cleaning etc). They did not seem to realize that MY TIME Wasted is important.