No, I'm just presuming they'll be charged the same as the Albion fans in the same areas, which is £34 for ESL. If they're not then while the points in this thread will disappear, we've got the 'Why are away fans being charged less than us to go to The Amex' thread to look forward to.
I guess they would be spared the transport levy, and keep the old South Stand price now that they are in a corner so their increase would only be £1 or £2.
As you say there's bound to be an argument if they do get cheaper prices though.