I've never heard them, so take this for what it is, but I've seen speaker cables made by Totem Acoustic (the Canadian speaker manufacturer) that look very flexible, and I believe they're in your price range.
Once again, I haven't heard these, but Totem makes high quality product and it would be worth a look.
D
Once again, I haven't heard these, but Totem makes high quality product and it would be worth a look.
D