She's not that rare. The problem you have is distribution because she didn't make it to the US, but she comes up for sale quite a lot in the UK and Europe. They seem to have been one of the more popular sets here.
I have one in my trade box right now actually. But she has some flaws and some ink marks. I'm asking $8 (£6) for her with said flaws, so I'd say around $15 for a mint one hits the mark.