Kardwell would not be a go between for a manufacturer and a casino even if they are the distributor in the USA, that is my opinion. Yes they are very nice cards, Dal Negro makes a very good plastic card. By the way Kem cards are a mixture of cellulose and acetate which gives it a unique feel and snap while remaining thin. Some people like it some don't.

My best guess is a very nice set that was sold in the gift shop for maybe $25.00 to $30.00