At €14,449, this is far above the typical used level in your database: the €322 median, €186 25th percentile, and even the €1,920 75th percentile. On those numbers, it reads as very ambitious rather than merely premium.
What makes it worth a look is the type of product: a well-regarded mains conditioner from a serious high-end brand, and the excellent condition claim is a plus if it’s complete and properly set up for 230V use. The upside here is for buyers chasing a top-tier power filtration piece with strong build quality and a known reputation for lowering noise and improving system calm, but at this asking level I’d want proof of original accessories, exact configuration, and strong reason to believe it’s effectively mint.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.