About £1700 A year but, my advise is have a look at the holaday park guide on buying an selling.

Once like i have done brought a brand new one £25k 3 years ago you have to sell it back to the park and they tell you how much they will give you in my case it was £12k !!!. They have total control you only rent the ground and they can tell you to piss off at any time and you can not just hook it up and tow it off you have to pay them ££££ to get it off site.

Bang to rights is one word that springs to mind