4 New in box sealed units. My wife found these the other day when she was cleaning out her home office (She was laid off back in Dec 06). I have seen these listed as high as $30.65 on Amazon Market Place and as low as $22.35 elsewheres. Asking for $21.00 each or $76.00 for all 4. Shipping extra if you're not local.

Product Description
For use in Hewlett Packard DeskJet 560C, 550C, 540C, 520, 520C, 500C, 420C, 400L, 400. For use in Hewlett Packard DeskWriter 560C, 550C, 540C, 520, 510. For use in Hewlett Packard DesginJet 600, 220, 200. For use in Hewlett Packard Fax-950, 900, 750 700, 310, 300, 200. For use in Hewlett Packard Officejet 350, 330, 300. For use in Panasonic Panafax PD4200, PX-350, 360, 333, 332, 322, 321, 315, 312, 311, 310, 305, UF-300. Black.

Contact Greg Skluzacek if interested.