Thanks for the great info. And for the answer I wanted to hear. Based on the UAL calculator, ORD-SFO requires 10,000 to 15,000 miles (depending on class of upgrade (again, I am not familiar, as all of AA's planes on that route, and any domestic I have flown have only 2 cabins)). Anyway, it seems a much better deal than $200 for 4 stickers.