Official Nintendo GameCube controller in purple. Can be used with the Nintendo Wii for playing GameCube games and prior. Just bought one myself to enjoy Zelda: Wind Waker on the Wii with it. £6.99, plus a further 3% off with Quidco (£6.78). Pretty good deal, considering the next cheapest I've found a new one at is £17.99
** See follow up post no: 4 for clear blue controller which is in stock!