After seeing your message Steve my heart really stopped. I searched again in my bank archives, and yes I haven't bought these 470£. Again it looks like I am not really serious, but belive me this was a mistake. I couldn't even sell these at that price of course, and nobody would have bought these from me !
The fact is I always though I bought these at 470£ while it was 410€. Quite similar you would understand. Again it is purely my mistake, and here is the check of the transaction I made for this kit :
So indeed I made a big mistake here, but nobody would have bought these from me at the price, me first !
So yes the CORRECT price is 300£ (=410€). 300£ is indeed the same price as the guy does sell the same kit on the link steve put above.
I do offer postage for my mistake, so price is 300£ incl postage.
And sorry again for this big mistake I hope all PFusers will forgive me.