"Perhaps he felt it was not making enough so he bid it out himself but then he would have to pay ebay some 3.4%
of the winning bid price but who knows.???"

And you don't find this dubious, if indeed this is the case? There is so much fraud on eBay. Trust me, I know. I am a seller that not only sells but buys and I have been stiffed several times. I stand by that this is a most unusual listing with seller being in Germany and the item being in the US.

You said, "I only wished they were worth more but alas I fear they will go lower unfortunately" - I truly believe the KN7000 will only go up, up, up. It becomes a supply and demand thing. When something is no longer made and in this case, no future model to replace a "last year's model" and this keyboard having the capabilities it has, well...