I personal won't pay more than retail for her. So if I never get her I'm ok with that. I'm sure there will be more of her down the road as she is becoming a disney princess.
I'm sure they will re-release her as soon as the hype dies down. In my opinion she is only worth retail too. I mean I just bought one each for me and my daughters two days ago, now they are sold out. It's insane.
The only one I would pay over the odds for are the limited edition Harrods dolls.