£6 plus £1.50 UK P&P.
Payment by PayPal Friends and Family, please.
I have ended up with two similar sized Omnigrid rulers but I've not found one size to be more useful than the other, so I think it is time for one to find a new home. It is a few years old, but the corners are still sharp and the edges are still smooth.
I'm selliing this one as it will post as a large letter, whereas the other would have to go as small parcel for about double the postage.