alright, I was wondering, how much, approximately, are masterballs worth, I'm thinking particularly of circus masterballs, soccer masterballs, dragon masterballs and rainbow masterballs. I've checked the museum and practically all the sales entries for these puzzles are from before 2005. so if someone could give me information about these I'd appreciate it.

http://www.puzzle-shop.de/start-shop.html

is selling some Masterballs.

Bought this one in ebay last month: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=260546102780&ssPageName=STRK:MEWNX:IT

This may seem like an obvious/unhelpful answer, but in truth they're worth exactly what you're willing to pay for them (assuming you're looking to buy?), or what other people are willing to pay for them (if you're looking to sell).