The prices are applicable for each of the corresponding days.
That means that for instance you pay 1€/day for each day rented after day 30.
.
Below you can find some examples:
Days 1 to 5, at 6€ /day = 30€
Days 6 to 9, at 4€ /day = 16€
Days 10 to 14, at 2€ /day = 10€
Total = 30€ + 16€ + 10€ = 56€
Days 1 to 5, at 5€ /day = 25€
Days 6 to 9, at 3€ /day = 12€
Days 10 to 20, at 2€ /day = 22€
Days 21 to 30, at 1.5€ /day = 15€
Day 31, at 1€ /day = 1€
Total = 25€ + 12€ + 22€ + 15€ + 1€ = 75€
Days 1 to 5, at 6€ /day = 30€
Days 6 to 9, at 4€ /day = 16€
Days 10 to 20, at 2€ /day = 22€
Days 21 to 30, at 1.5€ /day = 15€
Days 31 to 60, at 1€ /day = 30€
Total = 30€ + 16€ + 22€ + 15€ + 30€ = 113€