I'd like a macro that can be used to display ALL membership levels and prices. This way when I sent out for example renewal notices, I can simply include the macro to let members know what levels are available.

Currently we must hand-edit 8 different email templates every year, as well as update multiple sections of the website that list membership information. This is because rates change every year. It is incredibly annoying, it is prone to error, and it could be easily solved via a simple Macro which pulls out our account's member level names, prices, and other info, from the backend database.