I started a thread on this very subject a couple of months ago. I too only spotted the vat clause after ordering. I finished up cancelling the order becuase of the unknown final bill. 7Day do answer emails, although 3 or 4 days seems to be the norm and I had no problems in getting a refund. I explained the reason to them, but received no comment back regarding vat, although they did subsequently reduce the price further on the camera concerned so that even if vat was levied, it would have turned out cheapest.