I've been wandering in and out of our local Woolies for the last couple of weeks and ours (Bristol Galleries) hasn't got it's full range of summer stuff in yet. They've had a couple of shelves of plastic but not the full range.
I just bought a 38cm round bbq at tescos for under £8.00 - it isn't as handy as the legs aren't foldable but as we stay at sites for at least a week at a time I don't think it will be too much trouble to put together. I got it cost the box was small - haven't had it out the box yet though.