I don't honestly know what people charge, but why not let your potential buyers figure that out? There are plenty of guys out there that would want this model and would happily buy a kit and have it shipped to their builder of choice and pay what they're comfortable paying. Seems to me like trying to play middle man and contract out the building as a package deal is just unneeded complexity, but maybe that's just me.

I look forward to seeing some finished models either way. And kits too! I still like kits.