Why is the premium on a 2008 Kook so high ?

I was a bit slow

 

For a guide price: I purchased a roll of 20 x 2008 Kooks on ebay recently - total cost including postage $1200 so average cost per coin $60 dollars.

Edit: Just saw a post above where 2008 kooks sold for average $43....

It seems some deflationary pressures are on the prices of silver....people are more desperate for cash and prepared to sell cheaper.