There's a guy I subscribe to on YouTube, Eddie Castelin, who has some great videos on wood turning. He also sells lathe tools and cutters. I ordered one of his bars and carbide cutters as they are about 1/3 the price of anywhere else. The only gotcha is it doesn't have a handle. You have to make your own, which is part of the fun I guess.
Here is the bar as it arrived.
Here is the handle. It's a thin strip of cherry sandwiched between poplar. The copper piece at the end is just a plumbing fitting.