A Aprilia SX 125 averages €4,738 across all model years. Right now 4 are listed for sale, with the cheapest sitting around €3,200 (typically older years) and the priciest around €5,250 (recent years). The median is €5,250. A good price for a Aprilia SX 125 is under €4,738; anything over €5,250 is on the high side compared with similar listings. Selling to a dealer instead of privately usually means a lower price: expect roughly €3,938 to €4,725 for this model, depending on year and condition.