It's also on the Caravan Club classifieds, which means it's on caravansforsale.co.uk as well, though not in it's current Preloved form. I'd forgotten about Preloved's restriction of you not being able to respond until an ad has been live for a week or something, unless you pay a fiver membership. But surely you can still see the ad? Or am I wrong?
According to their stats it's been viewed as a single page on almost 200 occasions at an average of nearly 12 views a day.
It's £600 cheaper than any other ad I've found for the same year/model and there are dealers trying to sell the exact same van for £2,500 more than I'm asking.