To estimate the price of the 2021 Chevrolet Silverado V8 5.3L Trail Boss (Mid+), I analyzed the listed prices of similar cars. The closest match is the 2023 Trail Boss (Mid+) listed for SAR 168500, but it's newer and has lower mileage. The 2021 LTZ (Top) with 68000 km was listed for SAR 139000, and the 2021 Turbo LT (Base+) with 82000 km was listed for SAR 105500. Considering the Trail Boss is a Mid+ variant, it should be priced higher than the Turbo LT but lower than the LTZ. Adjusting for mileage and variant differences, I estimate the price to be slightly above the Turbo LT but below the LTZ, around SAR 125000.