LINK 1
LINK 2
LINK 3
Link to miles redemption chart.
Terms:
The 15,000 bonus miles will be awarded upon the first use of your Account for a purchase or balance transfer. Bonus miles will be sent to Spirit Airlines at the close of the first billing statement in which the purchase or balance transfer has posted. FREE SPIRIT ONYX World MasterCard cardmembers will also earn one (1) mile for every one dollar ($1.00) in balances transferred to your account during the first 60 days the account is open up to a maximum of 10,000 miles.
$69 for the World MasterCard (waived for the first year)