United is running a promo giving up to 60% milage bonus on purchased miles.
If within the next 3 days 1-250 people buy they will give a 30% bonus
If within the next 3 days 251-500 people buy they will give a 35% bonus
If within the next 3 days 501-750 people buy they will give a 40% bonus
If within the next 3 days 751-1,000 people buy they will give a 45% bonus
If within the next 3 days 1,001-1,250 people buy they will give a 50% bonus
If within the next 3 days 1,251-1499 people buy they will give a 55% bonus
If within the next 3 days 1,500 people or more buy they will give a 60% bonus