The Retainer Fee for a one-hour on location Senior Photo Session is $125. For a one and a half hour local session, the Retainer Fee is $150 (up to 3 wardrobe changes).. Requests may be made for extended session times and/or for additional location sessions. There may be an additional fee for out of area locations. A non-refundable half of the retaining fee is due at the time of booking.