I like where you are going with this.
I would guess your cost on the panels and windows extrusions etc is around $3500. Add more cost to cut, hold inventory, keep the lights on, deal with customers, general overhead etc. Bear in mind that these are not going to be sold at any kind of volume, it all starts to add up. $7-8k for DIY would be a pretty good price in my mind although a person would have to really want this specific product because with little effort, a pretty decent used slide in camper can be purchased for $8-$12k.
This Canadian company offered a composite panel slide in camper for I think around $10k assembled for several years and it didn't get any traction.
CPT RV composite panels are ideal in the RV industry where lightweight, strong, and durable design is needed. Although more expensive than traditional construction, composite panels are used where traditional building materials are unable to provide the performance required. Typical applications...
www.cptpanels.com
This company tried to import those campers, rebrand them and bump the price and as far as I know they didn't go anywhere.
If there was a design that suited my needs for a flat pack DIY composite camper for around $8k I would absolutely buy one. Sourcing and cutting panels is the hard part of this type of build in my opinion.
My wishful specs would be:
8' Flat bed style box to save pieces (material sqft or meters eh?), less weight, more easily assembled. Short bed guys could let it hang over or add an angled bottom corner for departure angle.
82" inside width to accommodate east west queen size mattress.
Nose over cab interior min length 60" for queen size mattress.
Passenger side entry door to allow for racks on the back.
Large horizontal rectangular door along bottom of one of the outer sides for storage. Corresponding compartment forms interior bench for sitting and additional sleeping space. A place to large enough for skis and surfboards etc.
HOW SOON CAN I GET ONE?