I remember seeing them at a coin show, but I don’t remember what they cost.
I do have a Roman coin I bought at a show, but it depicts a minor Roman emperor, Postamus, who was killed by his own troops.
The last time I saw cash coins in any quantity was on vacation to Hawaii when I visited a coin store. Lots of Asian coins and paper money there (Chinese, Japanese, Filipino, etc) and was bargain priced compared to what it would cost in the continental US.
I spent much of my childhood in coin shops learning about fiat money, hard currency, FDR’s confiscation of gold, inflation, etc. Learned a lot of real-world knowledge i never got through many years of school and college.