After reading several other reviews, I'm wondering if the cartridges have less ink in them than they used to. When I got my HP Envy 4500 all in one Christmas of 2013, the cartridges I used (not including the smaller "starter" one that came with the printer) seemed to last close to the estimated pages that HP lists. The color cartridges seem to last longer, but then again I don't print in color as much. I have done nothing different, I even use the same font/size that I've always used, but the last 2 or 3 cartridges (that are genuine HP new black ink cartridges) just aren't printing anywhere near what they used to, or what HP says they should. Others have noticed this as well. I wonder if HP is doing what so many others are with products...offering less content/smaller size for the same price. I'd rather pay a bit more & get the number of pages I used to. So I gave 3 stars instead of more because while the ink itself is good, there appears to be much less of it than before & it is getting pricey to continue replacing it.