This garage i can - making it big enuff for any normal sized van. It will be 6.00m x 4.80m x 2.50m high !!
So i can fit a van in easily.

Depends on what ya want - just a van or do ya want a camper with cooker etc and bed/raising roof.
A basic van in good nick from about ?3k. Ya wont get much for less than that only hassle and heartache.
A good camper you would have to pay around ?5k.
Depends what ya want. I have heard of "bargains" but they need a lot of work. Lower body panels rust very bad and not cheap to repair.