Costco, through its 1-hour photo service, offers refills of inkjet cartridges from HP, Lexmark, and Dell printers (Walgreens offers a similar service for $12.99 that includes Okidata, Sharp, and Xerox printers as well). Depending on the type of inkjet cartridge, a refill will cost $7.99 or $9.99--a significant savings from buying a new cartridge, and Costco estimates you can refill the same cartridge 5-10 times. Some printers may indicate that the cartridge is not filled completely, but this, Costco says, is because some printer ink indicators were not made with refills (as opposed to replacements) in mind. The service is not available at every Costco or Walgreens store. If you've tried this refill service, let us know how it worked, and if you found it a good deal.