If I remember rightly, TVS were quoting £650 - but this was a couple of years back. Why not consider a normal caravan awning, which would be much cheaper, especially if you buy secondhand. As you have a normal awning rail, you are not so restricted. We bought a secondhand porch awning for ours for weekend use and it was great.
WE're going to Shamba on 23rd March. Did you know the Conway Owners Club rally at Shamba every year? Just looked at their rally calendar and they'll be there next weekend. If you can go then pop along and say hello.
The 23rd sounds like a plan....we'll be the old couple in the corner....alternating between weeping and fighting !
Next weekend is sadly out, as we're going to a Caravan Club counselling session haha
Are you going to Shamba with the Caravan Club that weekend - we are. We'll look out for you although we won't get there until about 5pm. I have a UKCampsite flag thingy I can put up so you know its us!