I don't get it

The gas truck market seems about the same to me. I was helping a friend look for a late model low mileage F150 and was seeing them for around 25 to 28K. I just did some looking and saw some 2016 F250 XLT's with 35-38000 miles priced the same as I bought my 30,000 mile 2012 F250 Crew Cab 4x4 for two years ago (28K)