I think it might depend on where you are looking to sell her. Within the US she might command a better price than outside. Here in the UK we had both versions and they're probably about equally common (and our currency is in the dumper at the moment, so that isn't helpful xD) so I've never seen either of them priced that high here. I think mainland Europe mostly had the walking pose one, I'm not sure about the other - so she'd be considered the default one there. In the US or Canada, though, she wasn't sold - so the price might be better.
I think Pierlala's pricing sounds reasonable though with exchange rates changing all over the shop that might alter things.