To get this one away from the other thread. I did a quick search on eBay. "rare chip" 121 - 74 unique hits, "rare casino chip" 47, "Rare Casino" 130 - 83.
The reason for the unique number is that 47 items would be hits in both of the other groups. So this adds up to 204 current auctions on eBay for casino items, with the word "rare" in the description. (I didn't do chip*)

I look at it as a common problem with improper useage, but after that not worth the effort to even blink at it. Try "rare furby" sometime for a real laugh, usually runs close to 1,000 hits.