I purchased mine at a coin show, and what a deal. (I thought) The guy was elling poker chips and casino chips from a box. When I saw those $500 chips I knew I had to buy them. I think I still have three left. I used them as filler when I sold chips to people... Probably not too bad maybe $3-4 each.
Joined the club, found the BB on Prodigy and discovered I was buying Faux chips. Live and learn.
Good news on this "foolish" buy. I also picked up a 10c Artichoke Joe's Hot Pink, which is now an "E" chip.
Win some, lose some.
I've been sitting on these Regency $2 chips for years. Thank goodness I found eBay buyers who find them interesting at something over what I paid for them. Usually I'm happy to get my money back! <G>