Quote:
Originally Posted by Aquarian Sports Cards
cost averaging. If you submit 1000 cards the wins make up for the losses (if you're any good at grading) So on the lower grade cards you make what you can and move on.
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^^This
There are a ton of cards that yield a nice profit if you can get a 10 on them but that you'll lose money on if they come back as a 9. If you're good at grading and you are say ~80-90% accurate with your grades that you expect 10s on, then you'll turn a nice profit and you can just sell the 9s at a loss.