AAdvantage offers up to 18,000 bonus miles.
Offers are :
–Up to 30% bonus miles
Buy the extra AAdvantage® miles you need for flights, vacation packages, upgrades and more. Now through February 28th – earn up to 18,000 bonus
–4-day special: Additional 10% discount
Plus save 10% off the price in addition to the bonus miles when you buy through February 6, 2014.
This isn't an offer where I'd start accumulating AA miles but it's decent if you have to buy a couple more miles anyways.