Hi, rrr1..... You can find AFOs made of durable polystyrene on Amazon for about $40 each. I have tried them and they DO, in MY case, add more stability and help with balance. Plus, the nice thing is, if you go through Amazon and try them for a few days and they DON'T help you, you can return them for a refund. Here is a link if you are interested in trying: https://www.amazon.com/s
By the way, I have NOT been diagnosed with foot drop. But my neuropathy definitely affects my balance. These help ME.... they may or may not do the same for you. Best wishes! Mike