The Roku Express 4K+ 3941R (2021) is an excellent value and is a great streaming device for the vast majority of people. If anybody needing an updated Roku missed the $24 price (https://www.cnet.com/tech/home-entertainment/roku-express-4k-plus-on-sale/), it's currently only $29 at https://www.amazon.com/Roku-3941R-Express-4K/dp/B0916TKFF2, and probably similarly priced at other retailers, which is still a great price.
You can also check https://my.roku.com/upgrade/ while logged into your Roku account to see if there are any discounted upgrade offers.
Just bought Roku Express and can’t get it activated. Keep getting Error 001 and Try Again.
@Ajs6969 one thing that has worked for many users is to use a hotspot, such as one on a smart phone. It makes no sense, but that seems to let it activate, and then the Roku works just fine on the home network. I can't say it's a guaranteed solution, and again it makes no sense, but it's worked for many people.