from the CO forum-here are the new CO "fees" to upgrade in business, as perhaps a model if AA is going to match competitor...
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In response to declining international fares, effective Jan. 1, 2005, Continental will raise fees to upgrade to BusinessFirst on discounted economy tickets. One-way upgrade fees for tickets booked in B or O class will increase from $300 to $350. Tickets booked in V or U class will see upgrade fees go from $300 to $400 and tickets booked in Q, I, S, W, T, X, or L class will rise from $400 to $450 each way. There are no fees for upgrades for tickets booked in H class (except for flights to or from Hawaii which remain at $200 each way) and the fee for tickets booked in K class will remain unchanged at $200 each way.