I'm looking to put a black canvas cover on my M101 trailer. I have reached out to 5 or so different upholstery and boat cover type shops here in the Denver area, and the few that have replied so far are asking 1500 on the low end to 2500-3000 on the upper end. That just seems really high, but I've never had something like this made. I'd be interested in feedback from guys that might have had a custom canvas cover made? What is a realistic and reasonable price for something like this? Im just looking to do a basic black canvas, with zippered rear flap, and a couple of clear vinyl windows. Outside of local canvas upholstery and boat cover type shops, are there other places or business types to look for? What should I be