The cost of the ink cartridges was more than I paid for the printer itself. Staples should offer some sort of discount especially for those in their 70s.
Always buy the HP OfficeJet Pro 8710 ink as I am satisfied. While the printer is very good I have issues with printing on it with photo paper as it doesn't always feed through as it jams many times. :Previous HP printer I had no issue with the feed.