getstrake/aws-pricing-sheets-addon ? reverse-engineered prompt

Build me a Google Sheets add on that lets people look up AWS public pricing right inside a spreadsheet and use it to estimate cloud costs.

I want users to be able to open Sheets, add the plugin, create a new settings sheet, and then use simple formulas to compare pricing for EC2, EBS, and RDS. It should feel friendly for someone who is trying to forecast costs or compare on demand and reserved pricing without leaving Sheets. Include a small onboarding flow, a sidebar with help and documentation, and make it easy to start from a blank sheet or a template.

Please keep it polished and usable, with clear labels and a clean experience for non experts. If you need to check current Google Apps Script or Sheets add on docs, look them up online.