The Anniversary Edition on Switch 2 doesn't add anything over the original Anniversary Edition, but you do get the Dawnguard, ...

Skyrim has had a lot of versions throughout the years, but not all of them added an equal amount of new gameplay content.

However, the cost of that upgrade varies widely, depending on how much new content is included. $20: Upgrade Packs that include DLC-sized additions for the Switch 2 cost $20. At launch, this includes ...