Lots of money flying around on ebay the key word is "vintage" and the bidding will start. It really don't matter what they are bidding on.
Jon
I've noted this too, an auction several weeks back was for a "vintage" caller from a maker who fairly recently starting building calls. The date on the call was 2005. It would seem to me that you have to pass the decade mark before one can consider anything "vintage"..

In the defense of the Kenward on E-Bay, it is a nice truly vintage caller. However, the seller is asking about $1,800 too much...