BGS Question

Nevermind folks! This was posted by a member from another site.
"I remember reading that you can never get more than 0.5 higher than the lowest grade. So if you got 10, 10, 10, & 4, the overall would only be 4.5 (to use an extreme example).

Turns out this isn't exactly true. The various subgrades are weighted. I recently found a write-up in the ebay forums by Beckett Media that attempts to explain their "complex algorithm". Here's a snippet:

It is important to note that the overall grade is not simply an average of the four subgrades. Each of these four subgrades is factored into the overall grade of the card using a complex algorithm, with the lowest subgrade being the most important factor in the formula. It is rare for a card to receive an overall grade more than 0.5 above the lowest subgrade (if that low grade is in centering or corners), or 1.0 (if the low grade is in edges or surface). Two equally low subgrades will typically hold the overall grade from receiving any bump at all.

Here's a link to the full article: http://www.ebay.com/gds/The-Basics-o...0026891/g.html "
 
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