The silver package allows you access to all of the site's content for 12 months. The gold package allows you access to all of the site's content for 12 months plus a monthly magazine. The platinum package allows you access to all of the site's content for 12 months, plus a monthly magazine, and invites to special preview exhibitions.

The silver package allows you access to all of the site's content for 12 months.
The gold package allows you access to all of the site's content for 12 months plus a monthly magazine.
The platinum package allows you access to all of the site's content for 12 months, a monthly magazine, and invitations to special preview exhibitions.