Materials wise? I think he meant if you had access to the tools from a business perspective that could be around a 1000 dollars depending on where you get your supplies from
I was at a local hardware store the other day that sold over 20 gallons of epoxy for half off two days ago
Home Depot will sell purebond plywood at good prices every so often. Therefore I can see mapping out the cuts you need layer by layer. Instead of going absolutely ham with a cnc machine and doing, each layer piece by piece
over all its the time invested in it that would kill my conscience.
I'm not in the business of just betting 1-2 grand on a car sized paper weight where I am that no one will buy from me locally.