Korean accessory developer Zenus has just launched an American offshoot, Zenus Case USA, and is in the process of readying a mass of iPhone 4 cases for sale in the United States. Most of the cases fall into three broad categories of materials -- soft "Prestige" ($35-$40) and weathered "Vintage" genuine leather ($60), plus "Masstige" faux leather ($25-$30) -- and two different designs, the flip-open "Folder Type" and the rear shell-only "Bar Type."…
