consistency in plan cost formatting

Author: drusepth

app/views/subscriptions/information.html.erb

@@ -109,7 +109,7 @@
             </p>
           <% elsif @selected_plan.stripe_plan_id == 'premium-trio' %>
             <p class="center">
-              You will be charged $25.00 USD immediately, renewing every three months.
+              You will be charged <%= number_to_currency(@selected_plan.monthly_cents * 3 / 100) %> USD immediately, renewing every three months.
             </p>
             <p class="center">
               Of course, you can cancel at any time.