Gold Edition (digital) is on sale for $15:
https://www.amazon.com/Mario-plus-Rabbids-Kingdom-Battle-Gold-Edition/dp/B07B3Y426M

Will probably end today since it's a match of the post-E3 eShop sale. I would get that if anything. I'm normally the sort that prefers physical whenever possible but there is no physical release for Gold Edition here in the United States.