$3.50
Amanda sits on a stone bench near the lake.
She takes off her shoe and tries to warm her injured left foot by rubbing her right foot against it.
Since her sock is wet, she decides to replace it with a white one before heading down to the lake where she throws some rock.
On the way back to the car, her hands start to hurt after all the crutching, so after a while she starts to put weight on her foot to relieve her hands.