I built them at buddies shop/business.
http://www.kokeinc.com/. I designed everything and they help me put it together. I have formed a partnership with Koke Inc. and we will soon be launching a product line for resorts, but the main focus will be the backyard jib product line which will be different from the resort quality product. Our main goal with the backyard product line is to keep the price down under $400, but still be durable to last the buyer a few years.