iPad flat. According to the research firm, the total cost of components in the 16GB 4G model is around $310 -- not including assembly and shipping. With a final price of $629, Cupertino is pulling in about a 51 percent profit, a sizable drop from the estimated 56 percent profit margin on the similarly specced iPad 2 at launch. A large chunk of that increased cost of production is made up by the new retina display, which is estimated to cost around $70, and the LTE chipset, which UBM priced at $21. In contrast, current pricing on the panel in the iPad 2 and its 3G radio rest at around $50 and $10, respectively. We're sure Tim Cook isn't losing any sleep though, there are plenty of other ways to make up that lost dough -- like selling more iPads.