It's worth whatever people pay for it. That being said, softmod your Wii and import it from Europe Germany (For some reason it is $60 on Amazon Germany vs $74 in GB) . Shipping to the US is only $4, too (not sure if you'll have to pay customs. Assuming 20% you'd end up with $77). $64 ($77?) vs $150 is not too shabby, imo.
http://www.amazon.de/gp/help/customer/display.html?nodeId=200170100#USA