Ink is not expensive, so why spend a lot when all you need is a little? Keep the empty cartridge and replace the ink by getting it refilled.
You can refill most major brands of ink cartridge without any adverse affects. Refilling yourself could be messy but there are services which will refill the cartridges for you at little cost.

Cartridge World Greenford refills cartridges and remanufactures toner cartridges and they have a 100% guarantee as they are so confident in their product and it's performance. I have been having refilled ink cartridges since 2002 without having any problems at all. I save the environment and I save money!
If you want to find out more about those, see the column on the right here which details their service or ring them (UK) on 0208-566-3666. They offer mail order, collection and delivery for businesses and have a high street Shop in Hanwell London.
Despite the fact that most ink cartridges can be recycled the vast majority lie in land fills and contribute to the destruction of our planet.
If you want to help save the planet and save yourself some money at the same time - quite a lot of money as it happens, up to 60% savings - then refill those empty printer ink cartridges instead of throwing them away.
If you are worried that refilled ink cartridges can harm your printer, then you don't need to.
Using refilled cartridges won't affect your printer warranty and it's up to the printer manufacturer to prove that it was the refilled cartridge that caused the problem with your printer.
Browse this site for details of new ink cartridges and other printer consumables. I have sourced some of the best deals on the web for UK consumers.
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Cartridge World Greenford UK, Printer ink cartridge refills and printer consumables. Mail Order
Tel :020-8566-3666Email: cwgreenford@cartridgeworld.co.uk