A:AnswerI believe this pen has 10,000 different pressure sensors in it, while the newer one has 40,000. I think it really only makes a difference if you are doing something artistic with it like shading.
A:AnswerPretty sure it’s made for the Surface Pro 3,4 only.
Though could be possible if you have a capacitive touch screen, but accuracy probably wouldn’t be that great or you’ll scratch the screen potentially- depending on how hard you are pressing with the fine point tips.
A:AnswerYes. Best Buy does sell this model. Check the product page for up-to-date pricing: https://www.bestbuy.com/site/microsoft-surface-pen-platinum/5859012.p?skuId=5859012.