Haha indeed, im surprised that people actually take this offers up. Nothing in life is for free and im afraid to say that you really did get conned big time. I mean you do know you could have picked up a PS3 for a lot less than what you did??. Fair enough you didnt pay out-right for it but are paying it in installments of £45 for 18 mths....guess its an easier way of getting credit really as the payments are spread out over 18 mths but christ £810 for a console??. Imagine if your bills were higher than £45 per month...works out even more expensive.
Oh well more fool you mate...