issued by Las Vegas casinos are not so easy to come by because the number "8" is lucky in the Asian culture (I would think that you would have known this if your wife is Asian). I'm guessing that the cost to make an $8 chip is the same as it is to make a $5 chip, so right there, that casino is missing the extra $3 that walks when the chip does. More importantly, I would assume that many, MANY more $8 chips would walk out that door than $5 chips simply because of lucky number "8". And if the person in charge of making those chips didn't know or realize that...well, not the sharpest tool in the shed.
Steve B