Starry Crown charges (138 dollars)/(4 hours) = (138/4 dollars)/hour = (34.50 dollars)/hour
Solar R Us charges (143 dollars)/(5 hours) = (143/5 dollars)/hour = (28.60 dollars)/hour
Lights On Us charged (157 dollars)/(6 hours) = (157/6 dollars)/hour = (27.17 dollars)/hour
Lights On Us has the best rate.
