I did email this individual about his offering. Here is his response:

SIGNIFICANT MILLENNIUM CASINO CHIP SET
"I think any collectable used New Years Eve represents the Millennium. They are more significant that a souvenir set by far. These are real. Collectors have been buying these sets for the last couple of years for $30+. I don't collect chips, but these will be special and even more so when I provide Certification along with the sets. Good luck if you bid. Joe"