I bought this high yield cartridge about a week ago and it's already empty. I probably photocopied about 20 pages and printed about 15 pages and now it is showing empty. Unfortunately for me I have to buy more of HP's cartridges because I have an HP printer. But this is absurd. HP cartridges are totally unreliable. I have had this problem before in particular with the High Yield cartridge. I feel like I am being totally ripped off.