What is queue number and why are they denoted as U.S.?
For the sequential distribution method, backrs purchase a queued number of an application which can only be sold at retail on the App Store. You are purchasing the right to be paid for a specific copy when it is sells in the App Store. Backrs are purchasing U.S. queued numbers to simplify the process. Apple, Inc. treats each market (seven worldwide) differently and does not pay out until a threshold is met in each market. To avoid any possible situation where your copy sells but the backr does not receive proceeds immediately, appbackr specifies U.S. queue numbers only.