Canon PGI-9 GREY Ink Cartridge - Compatible with PRO-9500 & PRO-9500 MKII Printers - High-Quality Replacement for Photo Printing & Office Use

The product itself is five-star. The service brought the rating to one-star as there were no zeros. The item was backordered and I was running out of ink. My printer won't print at all if a cartridge is empty.After waiting a week with no indication of a shipping date, I ordered a cartridge from the photo shop in New York where I should have ordered it to start with. I got their shipment in about 3 days. It was over a week later before I received the Amazon shipment (2-1/2 weeks after ordering the cartridge). By that time, I had run out of ink and was lucky to have the cartridge from the other supplier.Now for the review of the cartridge itself: Although the genuine Canon Inks cost double what "compatible" inks cost, I would not take the risk of making a print that is not the best I can make in both color and permanence. So I use the genuine inks. They are permanent pigment inks and are as archival as I can get - unlikely to fade in my lifetime! I've only had one leak out of about thirty, so I will stick with the genuine Canon inks.