Sainsbury's have reduced the price of the Samsung Galaxy S2 Mesh Vent cases. They only have black in stock but, are down to just £2.99. In comparison, Tesco's are selling the black ones for £15-£16.
Sainsbury's reduced the price of them down to £7.50 at the start of the week but, went in to a couple stores yesterday and they both had them priced at £2.99.
Also had a Pro-Tec Executive leather Case, which seems to be an official Samsung sponsored product, also down to £2.99 as well as iPhone 4/4S cases. Only a few iPhone cases though in comparison but, if you can find any, a pretty good bargain. Picked up two Vent cases and a iPhone 4 Protec case. Again, the iPhone cases normally retail for £10-£15 (I've been searching for days for a case).