I'll give my .02 cents:
What about making the rear quarter windows an optional add-on? It seems that many people would like to have the windows and feel that they'd be missing out without them. I've owned several 4Runners of this vintage (though none right now), and I'd say this is one of the better looking tops I've seen. I like the fact that it has the bikini top included, that it folds down, and that it requires no drilling, and uses the factory rear glass. Most tops that I've seen don't include all of these things. If I own another 4Runner of this vintage, I will want to get a soft top for it, and I guess I'd like to have the option of having a top with those rear quarter windows, and one without. Looking at the frame structure it appears that the rear support would be in the way and might cause scuffing?. If so, perhaps splitting a rear OEM-shaped window into two triangles would work. Basically, it would be a strip of canvas running with the support bracket with the triangle-sections above and below. I suppose the support could be moved, but that would probably be more difficult and possibly make the "collapse-ability" of the frame impossible.
Overall I do like the top very much, but as for a fair price I guess it should be priced similar to competitive products (otherwise if it's priced too high it won't sell). Lastly, I would have to agree that the pirate4x4 board can be a very difficult place to get feedback without getting flamed/insulted/hung.