I have only stumbled across gliders which I don't like because all of them seem to develop some sort of squeak and they're more expensive. I just want a simple rocking chair and I can't seem to find one.
Consignment stores, yard sales, antique shops, etc. will be your best bet. I always see those there- and you can probably get one for a good price. Good luck!
Shop garage sales and auctions.
Lowe's had several for sale. Cracker barrel sells them as well. Best of luck.
The ones the sell at Cracker Barrel are really nice.
After purchasing my chair a couple of my friends mentioned to me that they had seen some old school rockers on Craig's List. It does appear to be a hit and miss item, but if you have a little bit of time before needing the chair you could always try that. Plus. if it is good quality you have the option of sanding and staining or painting it a color that works for you.