To estimate the price of the 2018 GMC Acadia SLT V6 3.6L SLT2 (AWD) (Mid+), I first looked at the selling prices of similar cars. The 2017 GMC Acadia V6 3.6L AT4 (AWD) (Mid) with 97000 km sold for 74000 SAR on 2023-10-11. The 2016 GMC Acadia V6 3.6L AT4 (AWD) (Mid) with 159000 km sold for 41500 SAR on 2023-12-08. The 2016 GMC Acadia V6 3.6L SLE2 (FWD) (Base) with 169000 km sold for 36224 SAR on 2024-05-15. Considering the 2018 model year and the SLT2 (AWD) (Mid+) trim, which is higher than the AT4 (AWD) (Mid) and SLE2 (FWD) (Base), the price should be higher. Next, I reviewed the listed prices. The closest match is a 2018 GMC Acadia SLT V6 3.6L SLT2 (AWD) (Mid+) with 134877 km listed for 62000 SAR. Other listings include a 2017 GMC Acadia SLE2 V6 3.6L (FWD) (Base) with 122000 km listed for 62500 SAR and a 2016 GMC Acadia V6 3.6L Denali V6 (AWD) (Top) with 164000 km listed for 54000 SAR. Considering the higher trim and similar mileage, the estimated price should be slightly lower than the listed price of 62000 SAR but higher than the selling prices of older models.