Apple’s Retina-equipped iPad mini is still in short supply at the start of the holiday shopping season. AppleInsider flags a note from Deutsche Bank analyst Chris Whitmore, who surveyed more than 100 retail outlets over the past few days to figure out both supply and demand for a range of Apple products during one of the biggest shopping weekends of the year. Overall Whitmore found that around 13% of all Apple stores were out of their Wi-Fi-only Retina iPad mini stocks while 20% of Apple stores were out of their cellular Retina iPad mini stocks. Things were even worse at third-party retailers “as Best Buy and carrier stores contacted on Black Friday saw stock-out rates of between 50 and 100%,” AppleInsider notes.