I purchased a 122 key keyboard recently from e-bay from this vendor and was very pleased with the keyboard I got. The seller is not describing it as a Model M or clicky etc, but the one I got was and was very clean when I got it. I did some additional work to mine to bring it up to pristene, but even in the condition the seller sent it, it was I would say a great buy and perfectly useful.
Noticed that the same seller is repeating the same advert, so no doubt has more from the same source. I thought I would mention it here.
http://www.ebay.co.uk/itm/IBM-1394324-TERMINAL-KEYBOARD-/231028768357?pt=UK_Computing_Other_Computing_Networking&hash=item35ca633e65The IBM 1394324 TERMINAL KEYBOARD is a true buckling spring keyboard. It uses scan code 3 codes, so you will probably need to add Soarers converter to make it work. The key layout is non standard as well though is a UK layout in the main. I ended up buying a full set of Unicomp Keys and an AVR breakout board. All in all I ended up with an expensive, but near perfect keyboard with some extra keys to play with.

More photos in my Album here...
http://s65.photobucket.com/user/justblair/slideshow/IBM%20122%20Key%20Terminal%20KeyboardHope someone else gets a good deal too.