eBay seller globaltekoutlet has TG3 BL82’s in stock, and they’re dirt cheap. You can’t argue with genuine Cherry MX Black switches, adjustable backlighting, and a metal baseplate, all in a 75% form factor for $55 shipped.
Check ’em out on eBay here.
Note that these use PS/2, not USB, so you’ll need a high quality active PS/2 converter. I recommend the Ziotek Blue Cube.
The TG3 BL82 is the industrial-branded version of the Deck 82 consumer keyboard.
Image source: mumyoryu on Overclock.net