I'm not surprised really. I haven't seen the article but presume that Alex was referring to all caravans rather than just UK built ones. When we started caravaning many moons ago everything was a lot easier. Waiting times for new 'vans was shorter, pitches were more readily available, and seeing a caravan on the roads was a rare event. But since the Twin Towers incident, it seems that many people who used to travel abroad decided that they'd give UK holidays a go instead. This has resulted in high sales and difficulty in booking pitches. Perhaps, confidence in air travel has now returned. Either that or everyone who's going to convert to caravaning has now done so. Air prices are now cheaper again and UK fuel prices are through the roof. It's not a surprise therefore that sales are now slowing down a bit.
As to your thoughts on caravan prices though, I do agree with you. I've often wondered why a company doesn't bring out a range of mix'n'match components. Where you'd buy a basic van and then add what you wanted, oven, microwave, blown air heating, fly screens etc. There's many things fitted to modern 'vans as standard that we would be happy to live without. The main one being the oven. I suspect however that the problem would be the second hand market, where the dealer couldn't look up a specific model and quote a price for it, as each one would be different. You may also get a problem selling it on if you had chosen an unusual combination of extras to be fitted.