It is worth it even it can be refilled only once. I am surprised that it can be done only 2 - 3 times. This is clearly why to stay away from printers with ink cartridges with integrated print heads on them. A few HP Tri-color ink cartridges can be refilled 4 or 5 times. Their black ink cartridge can be refilled a lot many more times. I can count up to 5 HP printers in my house that have been idled because I refuse to keep buying new ink cartridges.