A Triumph Rocket 3 GT averages €18,180 across all model years. Right now 3 are listed for sale, with the cheapest sitting around €17,445 (typically older years) and the priciest around €18,650 (recent years). The median is €18,445. A good price for a Triumph Rocket 3 GT is under €17,945; anything over €18,548 is on the high side compared with similar listings. Selling to a dealer instead of privately usually means a lower price: expect roughly €13,834 to €16,600 for this model, depending on year and condition.