I started by examining the selling prices of similar cars. The most relevant data point is a 2015 Nissan Sentra 1.6L S (Base) with 240584 km sold for AED 14000 on 2024-09-17. This car is similar in variant and condition but has higher mileage than the target car. Another 2015 Sentra SV (Mid) with 149023 km sold for AED 15500 on 2024-11-03, but it is a higher trim. A 2014 Sentra 1.6L S (Base) with 168900 km sold for AED 15000 on 2024-08-10, which is a year older but has lower mileage. Considering the accepted offer of AED 17500 for a 2015 Sentra 1.6L S (Base) with 158000 km on 2023-10-14, this suggests a slightly higher value than the selling prices. The listed prices are higher, with a 2015 Sentra 1.6L S (Base) with 198000 km listed for AED 21000, but these are typically above market value. Given the target car's mileage of 185500 km and average condition, I estimate its market price to be slightly above AED 14000 but below AED 17500, considering depreciation and market trends.