paycheque won't arrive until auction is over.
That's what credit cards are for!
No-one's gonna give me a CC if I have no income.
I've thought it out and instead plan to get the next one I find, in 5 or 6 years (hopefully less).
My views:
Something is fishy. It looks heavy, yet not thick enough. May be beam spring? He shows the cap but not the switch area.
What is pushing the spring mechanism? Where is the barrel? The cap looks like it goes inside the barrel, but too thick at the sides.
Somebody ask the seller to take photos of the barrel and the side. Then it might be ok.
Too expensive though. A beam spring may be better.
Seller photos are not needed. This is an IBM 6020218 4704-400 101-key "administrative" model for the 4704 banking / finance terminal system. It is indeed capacitive buckling spring and features a die-cast metal case. The popular "kishsaver" keyboard (or 62-key 4704-200) is also in this line.
You can tell it's buckling spring by the curved profile and keycap font / printing.
But if you still require pictures, here they are on kishy's website:
http://kishy.ca/?p=894 (scroll down).
The seller even has a picture of a buckling spring keycap: you can see everything from the curved portion that sits "over" the barrel, to the "nub" that holds the spring in place:
This is clearly a buckling spring keyboard.