I actually found the HP psc 2510 photosmart at a garage sale and picked it up very cheaply, since it has come down to a great price and I would recommend buying it for those needing something small and compact for day to day printing and scanning needs.
This printer/scanner is a great product from HP and although quite old now, it still works fine for me - minus it's excessive need to print a little crooked unless it is held in place. The scanning works fine and was instantly made accessible via Windows 7 without CD or driver installs - it's easy to use and really gets the job done.
It comes with a number of extras, can perform as a printer, fax, copier or scanner and provides good value for the low price it is currently being sold at.
Can be a little poor in terms of the flow of paper that passes through, but other then that it's a great buy - might be available at an even better second hand price.