Thread:HorusDB/@comment-31090299-20180830113346/@comment-32271305-20180830120050

You can simply select "double-rate banner", which will add 10% for featured SSRs and 10% for non-featured SSRs. In the last slot of a multi it's 90% for non-featured SSRs, but if you keep "Guaranteed SSR" at the top, the calculator will already know that ;)