GPA question

[DavidTheDavid]

Does GPA reflect data from its inception forward? In other words, does it include data from sales previous to its going live?

 

You can find more than one reason to ask that question, but my interest is how GPA itself has influenced purchasing and prices.

[romanheart]

Honestly don't know but prices for the last 5 years should be reflective enough for most books. If a book isn't listed in that time then you have to use your best judgment anyway. If you collect GA I would think you would be challenged for uncommon or rare books as well.

[valiantman]

Does GPA reflect data from its inception forward? In other words, does it include data from sales previous to its going live?

 

You can find more than one reason to ask that question, but my interest is how GPA itself has influenced purchasing and prices.

GPA goes back to 2002 with sales records, I believe. If you're looking for particular CGC serial numbers, those didn't get added until later.

 

As romanheart mentioned, sales older than a few years are nice to have, but probably meaningless as a "strong indicator" of current price.

[VintageComics]

Does GPA reflect data from its inception forward? In other words, does it include data from sales previous to its going live?

 

You can find more than one reason to ask that question, but my interest is how GPA itself has influenced purchasing and prices.

GPA goes back to 2002 with sales records, I believe. If you're looking for particular CGC serial numbers, those didn't get added until later.

 

As romanheart mentioned, sales older than a few years are nice to have, but probably meaningless as a "strong indicator" of current price.

 

GPA has been collecting public auctions for many years (a decade, maybe longer?)

 

Those sales going back to 2002 are archived Heritage Auctions.

[DavidTheDavid]

Thanks, all.