Yes. But just be aware they are a safety/ get you out of trouble gadget. They do say that you can drive at a max of 30mph and providing you stay away from sharp objects should last quite a while. Naturally once you are off the snow you take them off (no need on tarmac is there). Easy to fit and a 'nice' pair of plastic orange gloves to keep your hands dry.
Fit them, accelerate gently, and away you go. For just over £60 it is far cheaper than buying new wheels and tyres just for the odd time we get snow. Yes I know two weeks of the stuff seem like an eternity, but most of the year the things will be in the boot. And don't forget snow tyres will wear quicker if used on tarmac because of the softer compound.