They very well might have sold for those prices on ebay.... however, Alex asked what the value was. We all know how about chips selling way above and below their actual value on ebay. With Hard rock items, that's often the case when items are newly released. As for chips selling above their true value, how about the example below:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=6205504857&rd=1&sspagename=STRK%3AMEWA%3AIT&rd=1