I've been waiting ages for these shoes to finally go into the sale - Gazelles don't seem to come up too often. They are usually around £60-65 without delivery.
Original Gazelles are £49.49 inc, delivery - (loads of other popular designs on sale too if you prefer other styles.)
Sizes appear to be going fairly quickly though I don't know if USC will restock so keep an eye out.
Also 4.2% TopCashback, 4% Quido. I tried to use my Unidays student discount as well but sadly that doesn't work with sale items.