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Marc S.I don't think that will necessarily work. Scans are very subjective - and often don't cover nuances like wrinkles, creases, etc. If you are ever very interested in the subject - Levi Bleam has a very nice run of 1952 Topps Mickey mantle cards in almost every grade from 1-7. If he no longer has them in inventory - he might have the scans stored somewhere.
Especially with the lower-end graded cards, it can be such a variety of things that knock it down. A perfectly-centered strong card with great corners that has a crease. A card with great corners that is centered very poorly, and the submitter did not want a qualifier. Sometimes a minute pinhole on a T3 makes it a 1, but nonetheless very beautiful. Back damage can often misalign a card. A good example of a card with back damage is shown below (owned by Jay Wolt - a great guy in the hobby):
Thus - I think, at the end of the day, especially with grades 1-5, you may see cards with great eye appeal, and you may see cards that look like they've gone through a washing machine. Scans only do so much - and (in my mind) they tend to focus people too much on centering - and often mask other concerns (light corner wear).
Best-
~ms