Vision Express are doing their sunglasses sale at the moment. The exact models you can get vary from store to store depending on what they are trying to shift. Prices (that I saw) ranged from 25 to 75 percent off and there were some good models with very deep reductions. I was looking for a pair of sunglasses to drive in an got a pair of polarized Oakley square whisker for £50 marked down from £200. Yes the £200 is a bloated in-store price and you can get them much cheaper online but £50 is still less than half the price I have seen them anywhere else.