1. Lamborghini Murciélago R-GT: This limited edition tractor was produced primarily for racing purposes and was not mass-produced for commercial agriculture use. Its price might have been in the hundreds of thousands of dollars, but since it's a limited edition model, it's not easy to estimate the current market value accurately.
2. Lamborghini RS Series: The RS series included various models like the RS 100, RS 150, RS 200, etc., with different horsepower ratings and features. These tractors were known for their high performance and advanced technology. Depending on the model and specific features, they could range in price from around $80,000 to over $200,000.
3. Lamborghini R Series: The R Series also consists of multiple models, including R1, R2, R3, etc. Their price ranged from approximately $60,000 to $150,000, depending on factors such as engine power, transmission type, additional equipment, and so on.
4. Lamborghini C Series: The C series offered entry-level tractors for vineyards and orchards. These tractors could range from around $35,000 to $60,000.
Note that these price ranges are approximate and may vary depending on geographical location, market conditions, individual negotiations, and specific tractor specifications. Furthermore, Lamborghini tractors are not widely produced anymore, and their prices can fluctuate if they become sought-after collectibles.