Your only missing something if it sells; like the $200 in profit that you could make selling yours at the same price. This seller is another with good stuff, and lists it high. This holder has the manual with it. Maybe there are enough "Money Doesn't Matter" buyers out there to buy up this stuff.
One time I auctioned off a Nikon CF-7 case for the FM with a $1 starting price, listed it as suffering from Nikon Vinyl Rot and stated in the auction that the CF20 case for the Nikon F3 was made out of real leather and fit my FM nicely, and could be bought fairly cheaply. Somebody bid the CF-7 up to $27.