Retailers have reduced the inventory of iPhone 5s and older models of iPad in anticipation of the next-generation 4-inch iPhone 5se and smaller iPad Pro.
Even though Apple has not confirmed the launch date of its iDevices in March, retailers are taking steps to limit the inventory of the older 4-inch iPhones and older 9.7-inch iPads.
Amazon has already listed  a few cases of the iPhone 5se on its website, which suggests that Apple will launch the new handset sooner than later.
Previous reports suggest  that the iPhone 5se, also known as the iPhone 6c, will include an A9 processor - the same used in the iPhone 6s and the iPhone 6s Plus.
Apple Insider's price guide  also shows the iPad Air being sold out or on backorder, which means that many retailers are not replenishing their stock for older iPads.