I don't know what price I will ask yet, but it is on my mind, as I would like to be able to offer these and serve the need.
I have gathered figures for the bulk cost of the steel, since that's as easy as a trip to Home Depot. I still need to research canvas costs since it has been a while since I bought the canvas and I need to learn by doing as to how many yards of Cordura nylon it takes per top. I am using good quality ingredients, since I want it to last. Outdoor UV-rated thread included. After the canvas is sorted, I need to experience the sewing and make sure the pattern is good for being sewed together. Then I need to figure out if I can manage to get the rolled up soft back and rails into one box that still comes in under the UPS and FedEx oversize package penalty fee. My back of the napkin estimate is that it will be close, and I won't be certain until I try. To save bulk I will probably not include the foam pipe padding, as it is bulky and readily available at any home store.
I haven't cut canvas yet because I decided a few days ago to take another look at the frame dimensions before I proceed, in consideration that I remembered/rediscovered the velcro strip along the back of the soft top. This strip is obviously the best way to fix the front of the soft back to the rear of the top. My frame might be a little short, as I was trying to come in under the roofline. Being even with the roofline might be better from the perspective of fastening well to the velcro strip. I don't know yet.
I also want a better solution for the diagonal corner rails. I don't like pounding them flat and bolting them. I have a 3D printer and passable skill at CAD. I believe I can design a fitting to print that will tidy up that joint, but need to key it all in.
With all that said, I am expecting to come in the mid $300's at least, not sure about shipping (included or extra). I expect the amount of sewing is the labor intensive portion, and the part that will have me wanting to feel like I've gotten a good trade for my effort.
Still, I can't imagine this coming from a for-profit business for less than $750, after they develop patterns and engage sewing services. I will make it affordable to the average MV owner like myself, or I won't offer it.
Bulldogger