With it being the beginning of fall and winter its going to be hard to find deals on hoodies and jackets. They are just putting out winter clothes so they arent going to be on sale, the best time to shop for them is right after winter. I have no clue what a "superdry" hoodie is, but for cheap hoodies you can always try the goodwill, walmart, target, sears, jcpennys, rue 21, delias...they always have decent prices.
Your local swap-meet. That's where half of my old clothes came from.
Superdry is a brand :D