To estimate the price of the 2023 Suzuki Baleno I4 1.5L GLX (Top) with 73000 km mileage, I first considered the new car price for the same variant, which is SAR 63135. Given the car is a 2023 model and it's currently 2024, I applied a 15% depreciation, resulting in an estimated value of SAR 53665. I then looked at listed prices of similar cars: a 2024 GLX with 21000 km is listed for SAR 45000, and a 2022 GLX with 57000 km is listed for SAR 40000. The 2023 GL (Base) models are listed between SAR 37000 and SAR 38000. Considering the higher mileage of the target car and its good condition, I adjusted the price slightly lower than the depreciated new car price but higher than the 2022 model, leading to a balanced estimate.