Selling transit custom with rock n roll bed conversion

[hugginsc]

Hi, we bought our Ford transit custom about six years ago and a couple of years ago had Windows fitted and a camper rock n roll bed. We are now looking to seel, but how much do they go for? It's around 67k mileage, 2014, good condition and all work done by garage and. camper conversion company. Can anyone give me a rough guide? Thanks in advance, we just don't use it enough to justify it now with a little one now.
C