Blunt edges

[kobe bryant]

Most of the cards in my collection have perfectly sharp edges. But there are some with a blunt edge or two. This of course decreases the value of the card. What I want to know though is how much is the decrease in value per blunt edge that a card has?

 

[CamaroDMD]

It completely depends on how bad the corner dings are...the worse the ding, the lower the grade. Card values are tied to grade.

You can get a basic overview on different grades here:
http://www.psacard.com/Services/PSAGradingStandards

Like anything else, value is based on supply and demand. Sometimes, even a really common card can have a large value in a very high grade...if they are rare in that grade and a lot of people want them. Unfortunately, because of this...there is no strict multiplier for card values by grade. Each card's value is unique at a given grade.