HP L0H18A. I'm not sure who out there can use this, but I'm sure someone in the enterprise could use it at this price as it's usually $800+ easy:
HP LASERJET 2100 SHEET PAPER TRAY (B - L0H18A-BSTK - Z - CDW Internal Use/Service Pts - CDW.com
HP LASERJET 2100 SHEET PAPER TRAY (B - L0H18A-BSTK - Z - CDW Internal Use/Service Pts - CDW.com