Good product. I estimate that each cartridge prints between 2,500 and 3,000 pages depending on the quality settings I choose for my printer. That's about half the price of a "big brand" ink cartridge, but it prints the same number of pages. It only took two minutes to remove the old cartridge and insert a new one. I always think there's a catch and I'm missing something. This is the same number of pages as a more expensive brand, but at half the price. It's hard to beat.