Apple Inc. (NASDAQ:AAPL) is reportedly struggling to develop a cheaper version of its first-generation mixed-reality headset, Vision Pro. What Happened: In his latest weekly “Power On” newsletter, Bloomberg columnist Mark Gurman said that the high price tag and lack of mainstream appeal have led to a re-evaluation of Vision Pro’s roadmap. Apple’s Vision Products Group has decided to focus on making the headset more accessible to the mainstream market. This includes plans to introduce a range of devices with varying price points, similar to Apple’s approach with other product categories. Howeve…