Archie-Anchor won't release mintage information, claiming it's a trade secret. They will not complain if a casino chooses to tell. It is doubtful there are records of destruction anywhere because no one inventories what specific items are returned, just a total number. Purchase price from a mint is a secret, sale price to the casino is a secret and return price to Anchor is a secret. However, one casino manager told me the cost of a single side of a die is approximately $660 and dropped several hints as to the cost per strike. Perhaps more information is available from member Richard Nelson who owns a mint and deals with many items similar to strikes.