I've assumed it's the Romahome type. I've had two Romahomes (4.75m long) and four Bedford Bambis (3.7m long, 970c.c. engine). I never paid more than around £1500 for each them and sold every one at a good profit.
To be honest the Bambis were the most fun of all my (later much larger) m/homes and two of us toured extensively around Europe with them, slowly, but they are well past their best now....mainly rust and damp problems.
I travelled many miles towing my motorbike to rallies at home and abroad.
No idea how long my doblo is, but it is a high top converted wheelchair van, it is too high to go under most height barriers, descrimination against those in wheelchairs. not right.
Our local park has a height barrier, which is supposedly slightly lower than my roof, but after seeing other higher vehicles in there I gave it a go with John watching, will be fine till they resurface and dont alter the barrier to suit
Have previously had a romahome too, loved it just for me.