Not sure if this is the correct forum to ask this question but I am sure that someone will be able to answer and if necessary point me in the right direction. We are in the process of part exchanging our Trigano Tribute camper for a larger motorhome and as we purchased the Trigano 2nd hand we are unsure what was a standard fit and what would have been purchased as extras. In particular the following two items: Remis Concertina Internal Cab Blinds Webasto Diesel Heater. We are of course hoping that these 2 reasonably high cost items will make a difference to the price we are offered in part exchange by a dealer. Once again grateful for any help.