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Eric BHow are the set ratings and grade points calculated? They don't make sense. Let's use an easy set to calculate.
The N28 Baseball set has 10 cards. So if you have 5 cards graded PSA 7 and 5 cards graded PSA 8. you should have a rating of 7.50. Easy.
But set #3 finest (Mike W) has 7 PSA 8's, 2 PSA 8's, and 1 PSA 9. Seems to me that should be a grade of 8.10. But PSA has it calculated as 8.04 grade points and 8.043 set rating.
Frank Evanov has 52 possible points and has a grade of 5.30 and set rating of 5.304.
How does this even get to the hundredth's decimal place? there's a total of 100 grade points to be had with 10 cards?