Great charts. Feature requests: 1. Put checkboxes for every type and then combine the chart for selected types. It will be great to compare m1.small for all re

Great charts. Feature requests: 1. Put checkboxes for every type and then combine the chart for selected types. It will be great to compare m1.small for all regions, or most cheap types in us-east-1 2. Put a chart with calculated savings: us-east-1 m1.small cost $10 but currently is trading for $5, so the chart will show you are saving %50, etc.