I think it started with Tuff Stuff, morphed to Beckett, and is slowing transitioning to PSA Graded guide. I haven't referred to a price book in several years. I use to buy them to read the "Hot List" top moving cards every month. By the time you read the list, it had changed.
![Smile](forum/images/smilies/smile.gif)
When you ended up owning one on the "Hot List" you really thought you had something! 2 months later you're depressed because the card fell through the floor!
As a seller, I think one should sell, or buy, the card that they're comfortable with - maybe too much - maybe a steal - only the buyer/seller knows for themselves. Remember when a buyer, or seller - you choose, would say "Beckett says......". I don't hear that very often anymore now that cards are bought and sold quicker than stocks. Heck, now they can go into a vault and you can resale without even seeing the card.
I can still some use for a guide, especially if one is selling commons, etc. If I remember correctly, the higher dollar cards weren't priced, they were just noted as SP, SSP, not enough sales to determine value. If someone is spending 1K+ on a single card, you can bet they have researched everywhere to understand the current market for that card.
I don't want to condemn anyone for using a reference they are comfortable with. Just remember in today's instant search world, they're many reputable alternatives to just a singular "Blue Book".