This is a buyer’s market for this category, and €4,300 looks like a strong deal versus the recent used EUR bench: it sits below the €4,401 25th percentile and well under the €4,979 median. For a piece that usually trades in the upper-end cable tier, that puts it in bargain territory rather than merely “fair.”
These interconnects are widely respected for delivering a very low-noise, highly resolving, spacious presentation, so the upside here is real if the rest of the system is transparent enough to show it. Condition noted as good is a plus, and at this price the main things to verify are the exact length, termination, and that both channels are original and well cared for; otherwise, this reads as a serious buying opportunity.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.