I've just decided to buy my first prime lens. I decided it would be the Canon 50mm 1.8 as it's cheap. However I then realised that Canon are running a cashback deal on at the moment. Basically you buy the lens and send them a copy of the receipt and they send you money back. However if you buy two items which qualify for cashback you get an extra £30. Short version is, I've ordered the 50mm 1.4 from Amazon along with a flash. I'll return the flash after I've put my claim in, and will get the flash at a bargain price which not even the chinese grey importers can touch.