Stock rock rails are a dime a dozen. I got $50 for the ones taken off our 2012 Rubicon. I got $115 for the ones taken off the Rubi JL. Only call or offer I had in a month on CL. Others here will back me up. You'll never see $200 or even $175 unless you find a sucker.
Depends on market. If you’re selling in Colorado then yes, you probably won’t get more than $100-$150 since everybody pretty much has a Rubicon and are trying to sell their rock rails. However, if you’re in a market where there are less Jeeps then you’ve got a better chance of getting $200 for them. Also he did say OBO, so $200 is just a starting point.