Amazon has Lund 22858709 Chrome 5" Oval Bent Nerf Bars for $80. According to Summit Racing, these appear to fit most, if not all, Ford F-250 and F-350 Super Duty Extended cabs from 1999-2016.
There is also a $50 LUND rebate specific to Amazon purchases. Although, Amazon does not promote it which is where the YMMV comes in. If for some reason Lund doesn't follow through with the rebate, you may not have much luck with Amazon CS covering the difference.
Either way the price is still far below the regular $300-350.
Summit Racing Application Reference: