Paul, The coin inlay fakes are very easy to tell.
Only two I know of are Silver Bird and Holiday Int.
Real ones have an incused DiCard mold like the scanned one.
Counterfits have a smooth mold. Sorry I don't have a counterfit HI to scan.
I don't think there is much difference in price. The real ones are the chips that were found in the dumpster after the casino closed.