Huffy marketed and badged bicycles which were actually made by Raleigh after the TI merger, in Mens' and Ladies' frames, but they are quite uncommon. They made them in 21" and 23" frame sizes, all of them were the "Sports" line, no Superbes were produced. Depending upon the OP's height, I'd go for the top end of the budget and get a Raleigh-pattern frame then stick some decent wheels on it and have fun. Find them under the following brand names: Raleigh, Humber, Dunelt, Rudge, Triumph, New Hudson, Phillips, Hercules, BSA, Armstrong, Sunbeam, Norman. You should be able to find a working complete bicycle for under $100 but will have to put tubes, tires and brake pads (probably saddle) into it as well. Realistically, with a coaster-brake bike like that, it's worth it to put a little bit of money into if you want to lock it up and actually enjoy riding it. You could save a few $$ and get a step-through Ladies' frame but still have the same fit, as they are the exact same frame geometry.