Burton Spain Cue Values

This web site has always helped me find answers. I am researching the current selling value for Burton Spain cues, so I can establish fair values. I have two of them purchased directly from Burton in the early 1980's (Model #24 4 prong, and Model #34 6 prong). Both have letters of authenticity from Joel Hercek. I have enjoyed playing them, but it's time for them to be retired. Thanks,

Thanks for this input. I should mention that the 6 prong was Burton's personal playing cue at the time I purchased it.

Yes, on the receipt.