"Sam" himself mentioned they were trying to iron out the install instructions. He has also blatantly missed 2 dates in which he said he would provide results.
Not dogging him specifically, but i've seen way too many companies in the automotive aftermarket world promise this and that and never deliver. Or deliver late with a huge markup because of "unforseen circumstances".
You get a product completed, and bring it to market. Don't blur the lines and pretend its ready. Much like Berk can't get exhausts out because of holdups.
Price is..well..what it is. Nothing for a 370z is cheap. I'm not sure why everything for this car costs 4-10 times more than domestic car parts, but they do.