NOTE: THIS IS STILL £15 ON PLAY!
As the title says. The official RGB cable is only 20p instore.
Some one in the topic pointed out it is £4.88 online, still £10 cheaper than play
Here is a pic too:http://farm4.static.flickr.com/3569/3453311406_d383e86752.jpg
It is on clearance, but stores should stll have them. As you can see, mine has two left.