You will not find "cheap" OEM steps.
Best chance will be on e-bay- I bought for my old truck some for $130.00 - and they where not bad- the only thing you should check at the aftermarket ones, buy the ones with closed tube at the end- the ones with plastic cap will run full of water and corrode from the inside. Other than that- you can't do nothing wrong.
Opinions are like buttholes- everybody has one. :smileup: