I agree with most that TCR is an excellent guide for Nevada chips. I am surprised that no one mentioned the riverboat guide published by Greg Susong who solely supports this board. It is a must if you are interested in riverboat chips. Another venue is illegal club chips and Ed Hertel has a book on them which is excellent. As others have mentioned these guides are just that when it comes to prices. Most are accurate as to the retail value. I think that the low end of any guide is a fair price and I will buy almost anything that is one half of the price listed. A lot of people here buy very little but trade a lot. It is always good to have traders available, how many you keep depends somewhat on your pocketbook. I have found that over a period of years you will get rid of almost anything.