I'm creating a site for a non-profit with 4 levels of membership (different pricing for each), which all access the same set of membership-only pages. It seems that Squarespace member areas would require different pages for each membership level - is this correct? Rather than keep up with duplicate pages, my thought was to use ecommerce and "sell" membership levels as services and then have 1 membership level where they can all access the same pages. Is there any easier way to do what I need to do? Thanks!