CC Winter sites v's ACSI

I was just taking a quick look at the Club website and the new winter sites. I have only looked at the one site as I was looking for somewhere near Madrid so I cannot say this is the same across the range but what a difference in price. Monte site, just north of Madrid, is advertised at £24.31 for one night on a basic pitch. The price does go down but you have to stay quites some time to get it at good value. I thought I recognised the location from the ACSI book and checked with them, would you believe the site is one of the 14 Euros camsites, or £11.94 at todays bank rate that I would pay. How can there be such a huge difference in what the Club can advertise sites at and the ACSI group. No one in their right mind would ever book through the Club at this rate, or am I missing something?

Any views?

Regards, Roy