The quality we offer cannot be sold for 10 pounds including shipment, I am afraid (this is not to say that the cover you have is not quality). We think our covers are very reasonably priced, certainly compared to the 'offical brands'. Since the slimfit covers are quite labour-intensive, we cannot provide a wide range of colours. We, therfore, chose to go for the most popular colours.
Hopefully this answers your remarks.