Most of the south beach scooter and motorcycle rental places do not post the rental prices on the their websites.
I am guessing that the price changes according to the time of the year.
I did find out though that a 1 Passengers Scooter was rednted for $100 a day when you rent 4 days minimum in south beach.
hopefully someone who actually rented a motorcycle or a scooter will reply and tell you how much they paid
