Here are a bunch at different price points:
http://www.walmart.com/c/kp/outdoor-rocking-chairs
We bought ours from Walmart. Ours are on a covered porch too so I wasn't super worried about them being sturdy enough to withstand elements. I do find the Cracker Barrel ones super comfy though!
Home Depot and Lowe's sell them at good prices. Not sure about quality, but ...
anyone have a place they recommend for outdoor rocking chairs? will go on covered porch. have been looking and everything i find is pretty pricey…wondering if there's another place i haven't hit that is more reasonable? thanks!