The good news is that there a good amount of award availability and there are an incredible number of Business class upgrades available. (travelingformiles.com)
Domestic first class and international first class upgrades are listed in the A fare class, but international business class upgrades are listed in the C fare class. (rewardexpert.com)
Free business class upgrades on participating airlines with purchase of a full - price economy ticket (upgradedpoints.com)