I've got a B&D Wizard (they don't make it anymore as far as I know) that has worked for me for a decade doing things a lot harder on it than polishing straights. This honestly isn't very hard work for them compared to wood carving, or sharpening a chainsaw or re-grouting a bathtub. If I were to buy another one I would probably get the $15 knock off from Harbor Freight. Dremmel Kind of has the monopoly on these tools and they definitely charge like they do.