I agree with Detlof. The price guides are often incorrect. Take for example, Goldmines jazz book. It has prices of somewhere around $300.00 for a NM Lee Morgan "Candy". If you can find 2 dozen at that price, I'll take them. They have sold for up to $3200.00.
Check todays' market on line, at the various dealers and eBay. It seems that now it is a buyers market at eBay. Will it change?