Question for those that may know. Ive used the TCR the past two years as a guide to chip values when I bid on E-bay. I have not purchased the US casino guide as yet. I hear raves about it and will buy it when I return from Reno after next week. My question is, I understand that there a lot of differences in market value of chips listed. Is there a different rating system? I understand all the authors applaud each other and I know some of them have helped me in the past with private E-mails. Although both books are popular and informative, there must be some reason the value estimates are so varied. By the way, I also have Dale's Antique book and I love it! Just wish I had a few more items that he has listed. Thanks for any help, Don