Peru Retreat Payment Portal Custom › Peru Retreat - 4-Month Payment Continuation (5% Interest) Image 1 of 1 Peru Retreat - 4-Month Payment Continuation (5% Interest) $778.80 every month for 4 months $778.80 every month for remaining 4 months.Please note that there is a 5% interest fee included. Purchase Added! $778.80 every month for remaining 4 months.Please note that there is a 5% interest fee included.