Awhile ago, I was looking for a 4/3 lens adapter on E-bay. There was one listed at $559.95. The listing said there were "more than 10 available" and that there were "24 sold". Clicking on the "24 sold" brought up a listing of the sellers and the price paid. In all cases the sold price was $9.95. Thus it appears that there was a listing error that added a $55 to the actual selling price of $9.95. I have seen this type of glitch several times on E-bay.