Check the population numbers for the ENTIRE set and it will give you an idea. I will also add that if you find a set that seems to be an impossible grade, yet you have what you consider to be gradeable - GRADE IT! It will instantly be worth much more than the raw version. Case in point - 1990 Score Hot cards, I own the only Marino 10, but I never thought I'd even find a 9. They're VERY condition sensitive. I think I paid $75 for it so you can see what a tough card graded highly can do for your wallet.
* Always buying ANY reasonably priced Marino card(s) I don't already have *
-- WANT LIST LINK --