Where on the "East Coast" are you located? I'm an HP Authorized Repair Technician currently working for an Authorized HP Printer/Plotter repair company located in North Carolina (coincidence, or something else?). I'm authorized to repair almost everything HP allows us to repair from the original HP LaserJet to the expensive Color LaserJets along with most DeskJets and DesignJets. Parts for some of the machines have been discontinued and are getting scarce, though.
I also have a basement full of HP LaserJet II, III, IID, IIID, IIISi & other miscellaneous printers (approx. 80 in all) that are in various states of repair/disrepair. My wife would love for me to get rid of some of them (hint, hint, nudge, nudge). Besides I need room to build and run my CNC router table (currently under construction).