I'd love to see any amount of research to actually back that up.
dont mind if I do!
for a search of CGC SS:
9324 closed auctions in ebay's current availble database
5487 sold books in ebay's current available database
that means of over 9k recently closed auction more than 58.8% of them sold successfully
For a search of CGC:
80,069 closed auctions in ebay's current available database
43,554 sold books in ebay's current available database
so just under 54.4% successfully sold items.
so blue books sell at a lower success rate than yellow label books, but obviously make up for that in volume.
That says nothing of realization of value vs market (performance, return, etc) I was surprised to see how similar the numbers (by percentages) were. I thought there would be more sitting in the SS numbers, but it seems like both markets churn around 55%
I love stats - but the thing I am truly curious about is how many of those books sell for *over* what someone has into it (book cost, slab, sig).
Traditionally, I have taken a loss on the sales of nearly all of my CGC SS books - with a few rare exceptions. I attribute the problem to artists/writers keep on signing books at conventions, thereby fractionally devaluing my book every time another one enters the marketplace.
The only way I can see that being true across the Board is if you are spending current top end FMV on a blue label book, cracking it and getting it yellow labeled. Then your costs are so high that you are a slave to Yellow GPA, and if it is not above Blue 9.8 plus costs, then you lose. If you are subbing raw books, or blue labels that have a low cost basis, your margin is much better and profit is relatively easy even when discounting from top end prices.