And to answer your original question, Muppet Guy ... a lot depends on the condition of the card. A figure on mint card will be worth at about 15 US$; for anything less you won't get more than 10 US$.
The individually carded figures are still worth a tad more than the box that continued all 6 figures, which won't sell for more than about 20 to 30 US$. Of course, it's very hard to get a really mint-mint box.
By the way, these are not by far as rare as many may think. A quick search on eBay learns that much anyway ...