Currently an auction is running on the U.S. eBay site for Belgium, much to the chagrin of Belgians who may not want to move. Note that eBay shut the same auction down on the Belgian eBay site, but they apparently didn't get around to shutting this one down.
However, knowing eBay, the auction will probably be gone before you can take a look, so I have an image to the right (click on it for a larger one). There are 26 bids as of this writing, with the current high bid 10,000,000 Euros.
The seller, dekaesstecker is from (where else), Belgium, and has 100% positive feedback based on one auction in May of this year.
According to the auction, the country is a "Kingdom in several (3) parts, can be bought as a whole (not recommended), can be bought in parts."
The three parts are Flanders, Brussels and Wallonia. Note that the country is used; the seller does take PayPal, at least.