A Triumph Rocket 3 GT averages €18,298 across all model years. Right now 2 are listed for sale, with the cheapest sitting around €17,945 (typically older years) and the priciest around €18,650 (recent years). The median is €18,298. A good price for a Triumph Rocket 3 GT is under €18,121; anything over €18,474 is on the high side compared with similar listings. Selling to a dealer instead of privately usually means a lower price: expect roughly €13,723 to €16,468 for this model, depending on year and condition.