1969 Czechoslovakia 25 Korun

All of your top bidders are active collectors of Czech/Slovak coinage, so their bids will tend to run higher for quality material. That, combined with the weakness of the US dollar against most European currencies, makes ebay US prime cherry-picking for the European collectors. Catalog prices are often based on out-dated exchange rates, so figure if you are selling to the European crowd, the catalog value (in US$) is often less than half what the Europeans are spending locally (at current exchange rates). So, if the current US catalog is $40, then the Europeans are probably paying ±$100 to get it locally, so $80 from a US seller may seem like a steal to them.

What a difference a few years and a bad war can make. About 8-10 years ago, I spent most of my time cherry-picking quality material for my collection off the ebay Germany site. Now, their prices make it hard for me to even consider, and I am relegated to the second rate material available on ebay US. What I wouldn't give to see the US dollar rise enough to trade on par with the euro, but I don't see that ever happening in my lifetime.