To estimate the price of the 2018 Nissan Maxima SV V6 3.5L SV (Mid) with 111000 km mileage and average condition, I first looked at the selling prices of similar cars. The closest match is the 2017 Maxima SV (Mid) with 80000 km sold for 63500 SAR on 2023-09-24. Adjusting for the additional year and higher mileage, I estimate a slight depreciation. Another relevant data point is the 2016 Maxima SV (Mid) with 208000 km sold for 41000 SAR on 2024-07-05, indicating a lower price due to higher mileage and older model year. The 2018 Maxima SR (Top) with 109000 km sold for 75000 SAR on 2023-11-01, but being a higher trim, it would be priced higher than the SV (Mid). Considering the listed prices of similar cars, which range from 72500 to 80000 SAR, and adjusting for the average condition, I estimate the market price accordingly.