Look for better prices for batteries than the usual suspects. Buying bare tools and sourcing the batteries can save a bit of cash. I see Dewalt 4ah 18v at £49.99 and the 5ah one at £59.99 in one store, and the same batteries are £74.99 and £124.99 respectively in a big chain store, so it's worth shopping around. Oddly, the 1.5ah one is a whopping £79...why?