Ok so richardson's in Norfolk offer the following for a 4 day break starting 1st August at Summerfields which is near Great Yarmouth.
First floor apartment with balcony. Double bedded room and sofa bed in lounge with lounge/diner and well equipped kitchen £209
Two bedroom ground floor chalet with one double and one twin beddedroom £228.95
Two bedroom ground floor chalets with one double and one twin. There is also a sofa bed in lounge £295.45
Three bedrooms. Modern 12ft wide caravan with one double and two twins. Sofa bed in lounge £361
Two storey chalet with three bedrooms, two double rooms and one twin £304
And some other options too, but basically in price range.
Look hee for more info on the site
Again lots to do in the area bewilderwood, pleasurewood hills, Great Yarmouth itself, norfolk broads etc
Stayed at their site in hembsy and teh acoomodation was cheap but good andwell worth what we paid. Entertainment in the evenings was excellent, as was the kids club. So assume will be similar at this place.