Originally priced at $479, the 256GB version of the ninth-generation iPad is currently discounted to $399 at Walmart, the best price yet. While this iPad uses the A13 Bionic CPU instead of the faster M1 found in other models, it still has more than enough power for any app. And its 10.2-inch 2160 x 1620 resolution display looks great. A key selling point may be its 3.5mm audio jack, depending on the person. Rumor has it that Apple’s next entry-level iPad may be getting rid of the…