Afraid to say Liam is correct, you're most likely screwed! Always - ALWAYS - pay with Credit card on the net. Every major card provider will cover you for purchases for such problems. As an IT guru you should have already known this, but no point dwelling on it. I would get down Argos, and cut your losses and buy one
Unless you know an actual address of where they are registered (and are actually based), you will have no joy chasing them with legal action as they cant put a claim on someone when they dont know where they are or who they really are.
I for one always pay with card, even when using PayPal. So if some theiving scum tries to take my money and even PP cant get it back, the CC company will chase up for the money off them and immediately refund me the money.