I have seen those rollers online on Ebay and in 2nd hand stores. They run from a few dollars to $40 for the wrought iron ones that you hand crank into a log roll. I've seen them called NEWSPAPER LOG ROLLERS. I even Googled it last year and found some sites that show you how to make your own without...

I didn't know there were multiple brands. Have just seen a black one with a hand crank. It was at a thrift store, so no box or anything.