Sweden is getting their first Costco in October 2022!
Costco is an American wholesaler and grocery store. It requires one to purchase a monthly membership card for 500kr as a private person. According to photos of their sign up booth, they will be carrying many American products, including their Kirkland brand products - it isn't clear if they will carry their Kirkland brand alcohol to private customers given Sweden's alcohol laws.
Are you going to get a membership?
I personally might try it out - just to get my hands on some American products that I usually import. However, I never had a Costco card when I lived in the US so I am undecided.