Can I bid more miles than I currently have in my WorldPerks account?
No. Please bid carefully to ensure your total bids do not exceed your available mileage balance. If you are declared a winning bidder at the end of the auction, and you do not possess enough miles to cover your bid, all of your bids for that item and others will be voided. Additional miles may be purchased at http://nwa.com/worldperks/buymiles.shtml.