All prices are shown in USD / United States Dollars, $.
If you have paid any invoices in the past, or have an upcoming invoice, you will be able to access this page.
Notice the first invoice is marked as "Upcoming". This is the same invoice that is available on the Upcoming Invoice page.
The second invoice is for the previous year's $150 / year rate (for this subscription option). If you click on "View Invoice" you'll see the invoice details.
This page will look identical to the Upcoming Invoice page, with the exception that this is for a paid invoice.