I found a lots of good quality branded iphone 3g and ipod cases in my local TK Maxx Wood Green branch.
The normal prices are £19.99 and now reduced down to £5.99 or £4.99. Not bad for good quality cases. Some of them come with screen protector and headphone storage.
Apple store and other retailers (PC World, Currys, Micro Anvika and online retailers) are currently selling the similar cases for £24.99.
I m not a big fan of TKMaxx but it is worth popping in your local branch as they are doing massive discount on ipod, iphone cases and (up to 60% off) on Toys.
Plus I also grabbed the blackberry travel charger for £1.99 and all aluminium 7 LEDs torch for £2.99