I have been looking for a Kobe 2 seat Sofa bed, and Co-op were the cheapest since they included free delivery - £189 (you can even choose the day you want!). But it turns out that at the checkout you get another 13% knocked off! This took it down to £164.35.
It does say on their website that they pay the VAT on all goods, but since VAT is currently 15% this does not add up. But even still it is a great price.