eBay's probably your best bet. the FS/FT forum here has mostly dried up for Cisco. I see maybe one post every 2 months for low end cisco hardware (2924s, 3600s, 4000s). I've seen one post for a 7200 and one other post for a GSR 12012, both of which were last year. I would save your energy for eBay :| You might also want to try the isp-colo list.