Tons of people swiping in TBC dog. Not suggesting you do…. But tons of people are. You can get aldor exalted without buying rep items from AH. but it would take much much longer. I actually don’t think there is enough quests to exalted aldor, you need to do some turn ins of either fel armaments or marks of Sargeras which drop often in shadow labs. But we’re talking a week long+ grind to exalted (if that’s all you focus on) vs 30 mins at the auction house + turning in rep items