Assuming that dealers have databases that can generate extracts of sales which I am guessing many don't they would not be calling me.
Also some of you assume that some of the biggest dealers are tracking their sales. You would be surprised at how many don't.
It would take me less then 5 mins to put together a daily/weekly or monthly extract of CGC sales.
But as Roy stated in a earlier post I am NOT in business to make you money (You is not you Chris).
I am not sure if people see that dealers need to buy copies of books that they are selling. If you are raising the sale price of the book you are also raising your cost. And with more and more "weekend warriors" needing to squeeze every dollar out of a book that job gets harder every day. Add on top the expense of finding those books and I ask myself why am I helping my competitors price their inventory on my hard work. Because I'm a nice guy? This is business and I run it like a business.
And some of you think that "But bob, if you report your sales you can get more on the next copy". Not when the GPA buyer mentality is that I don't want to set a GPA record, I want a GPA discount. I call that the Slow bowl pricing flush. Watch the GPA price slowly swirl lower. Eventually they want you to buy at Retail and sell at Wholesale. How do I know this? Years of conversations with buyers using 12 month average, 90 day average, last sale. Anything to get the "Look what I just got this for Convention stroll".
All this comes from the years of the Dealer/collector battle. You see it all the time. Did I get over on him? Did he get over on me? What, I got screwed? Yeah man, I'm going to sell this on ebay for $500 and I paid $25, high fives for everyone.