Note: The following post is sponsored.
"Office Supply Outfitters is a premier supplier of toner cartridges, inkjet cartridges, printer supplies, fax supply and HP toner. Find ink cartridges and copier toner for your inkjet printer, and also find fax and cash register ribbons."
They have all kinds, from the HP C9704A toner drum unit and much, much more. Even the hard to find ones that's driving you crazy trying to find. I searched for the price for replacement inkjet cartridges for my printer, and they sell the black ones for as low as $3.29 and the color ones for $4.99. Looks like I found another sponsor to spend my money on.