If you ask me, of all the price guides around, I think Greg Susong's is my favorite way. I love that he has ALL of the chip scans. Not only are they all there..but the are excellent quality and they're in color! Sure it costs more to do. Sure the profit ,arging will be down a touch. Sure you have to take the time to do the scans..and the file space etc. But boy!!! the final product is awesome. I think if others are like me, they eagerly await each new issue. Its a very valuable to to have all of the scans. That way, its an instant ID on the chips.
I know it wasnt an answer to your direct question, but I thought I'd put my opinion in.

WE LOVE SCANS...lots of good quality scans.