I've noticed that prices for UK/European exclusives tend to be (much) higher in the US, so if you focus your search on Europe, your chances of finding her for a decent price are definitely higher. Especially listings from sellers who limit the countries they are willing to send to (e. g. EU or Germany only) tend to end up at lower prices.
I've seen her a few time since my purchases, so she isn't exactly rare, just not as common as Peachy.