Hmm I must say this price label thing got me confused also.
The Price equation is the mathmatical formula which shows how altruistic behaviour survives evolution and is benificial to a gene pool, Price took his own life after converting to theism and giving away all of his possesions before cutting his garroted artery with nail scissors.
I am guessing that this has nothing to do with it, but that thought led me to remember Price is a surname also, so perhaps like Krauss it is a catalogue number?
I don't have any reference for Greek coins and for Roman only what appears in Spinks. I don't read the Greek alphabet either (though I will get my girlfriend to teach me, she knows everything linguistic speaking Bulgarian, English, Japanese and Chinese and reading too)
This I will rectify at some stage but for the moment I am just judging what is good and bad by what is available at what prices and using the internet and other tools for reference, and of course I have had some good advice from those on here who seem happy to discuss and share their knowledge.