what are the rewards for the contender league in fortnite?
['1st rank - $3,000.', '2nd rank - $2,600.', '3rd rank - $2,200.', '4th rank - $1,900.', '5th rank - $1,600.', '6th rank - $1,300.', '7th rank - $1,200.', '8th rank - 1,100.']