Is €100 the right money for this one, or are you paying a bit too much for a used pair? Against 191 recent comparable listings, €100 sits above the €98 75th percentile, so this is slightly ambitious rather than a bargain; I’d want it to justify itself with excellent condition, complete accessories, or unusually fresh use.
That said, this is a respected office-and-travel headset with strong active noise cancelling, solid call quality, and comfortable all-day wear, which is why it stays in demand. If the batteries are still healthy and the charger, dongle, and case are included, it can still be a sensible buy—but at this price, I’d treat it as “clean and complete” money, not a rough-condition pick.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.