I know it is an expensive purchase but for hardcore racing fans it is an essential purchase especially as Gran Turismo 5 is coming out.
Just to demonstrate the savings these are the prices at other retaillers
Play £229.99 but 3-5 week wait
To get the £174.30 price use voucher code jhayxz8bu
EDIT: Code "jhayxz8bu" no long works, however the code "ibzmueamv" does. The deal is back on! =D