The Aston Martin One-77 is a rare and exclusive supercar. When it was initially released in 2009, the estimated price tag for this limited-edition vehicle was around $1.7 million. However, please note that prices can vary based on factors such as market demand, customization options, and the condition of the car if it is sold in the secondary market. For the most accurate and up-to-date information on the current cost of an Aston Martin One-77, it is recommended to contact authorized Aston Martin dealerships or browse reputable luxury car websites.