Here is a current eBay Dutch Auction where you can buy common plain plastic mermaid mold chips for $10 and up!
As I say in the subject heading, you don't know whether to laugh or cry. It is interesting the way the auction description is so elaborate and long for this junk. The seller says" These chips are basic dragon mold chips. These chips are selling through respected casino chip dealers as well as movie prop dealers for large sums of money and are sure to become more sought after as time goes by." (Ha Ha!). Here is the link:
~Ocean's 11 eleven Movie PROP casino Chips~
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3350341161&category=790&rd=1
The chips are pictured below.

Robert