Fair value is not a percentage of retail; it is the market value of this model minus predictable costs. Inspect the cue before pricing it.
What drives value
Consider brand and model, shaft straightness, joint condition, tip, bumper and original components. Rare decoration may attract buyers, but it does not cancel technical defects.
Cost adjustment
Add delivery, a case, a new tip, possible straightening and expert inspection. If repair approaches the price of a sound comparable cue, another listing is safer.
Negotiation
Request condition evidence, serial photos and time to inspect. Base the offer on documented defects rather than an arbitrary percentage discount.