A:AnswerYes, it will show 4k on your live stream. And to prevent lag internet cable would be your best choice. All depends on how fast your internet is.
A:Answerthere are no extra fees or surcharges with a PS4 Pro. However, should you sign up to Playstation Plus you will have to acquire a monthly or yearly plan.
A:AnswerYou will need to contact your local Best Buy directly and ask since each location will have a different inventory. Incidentally, ask about this one and Red Dead Redemption 2 Ps4 Pro bundle. It'll , probably , be the same price and have more available since the Bundle has the newer PS4 Pro model.
A:AnswerPS4 is dual voltage. So, technically, it's both.
https://gaming.stackexchange.com/questions/228953/will-us-ps4-work-on-220v
(Here is a more detailed answer.)
Sum up - Dual Voltage and not region Locked.
A:AnswerHow to watch 4K video on PS4 Pro with Netflix, Amazon and YouTube
https://www.gamesradar.com/how-to-watch-4k-video-on-ps4-pro-with-netflix-amazon-and-youtube/
As far as playing 4k via disc, PS4 Pro does not.
A:AnswerYes. but the answer isn't EXACTLY cut and dry. There is the basic Manufacture Warranty, a Best Buy (at a cost) warranty , and various other options.
You'll have to check them at the time / after a purchase. The console has all . or rather most , documentation to get you started.