This is a buyer’s market category if the speakers are complete and working, because typical used pricing for the pair sits roughly around €1,500–€2,400, with new/retail references much higher; at €1,400, this asking price lands on the strong-buy side of fair rather than ambitious. If the pair is cosmetically clean and the drivers are original, I’d treat it as a solid value.
These are well-regarded for their lively, efficient, room-filling presentation: 92 dB sensitivity, a 3-way floorstander layout, and Triangle’s usual strengths in speed, openness, and dynamics. That makes them easy to partner with modest amplification and appealing for listeners who want energy and scale without needing huge power. The main thing to verify is condition of the tweeters, woofers, and cabinets, plus any original grilles/spikes/boxes if included; at this price, a clean, fully original pair is the sweet spot.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.