Insulated, ply lined then lined with car carpet and red silk for rear doors, couple of hundred quid. Part conversion so still a van, just got new insurance for £410. Raised pallet for a bed that folds back on itself, storage underneath. Fold in half mattress from IKEA for about £200. Buy a caravan and leave the good spots for me to sleep at. On board loo is a bottle with wide neck for pees, Mrs bought a she/wee. They are expensive as you want to make them, off to Swiss Alps this summer for 2 weeks, Wales or Lakes every other weekend, my lawn is ace.