Kerry Greenwood

I just finished reading Kerry Greenwood's "Murder in Montparnasse,"
featuring her continuing character, Phryne Fisher. This is the first of
this series to be published in the U.S., although it's probably the 12th
or 13th of this series, having been distributed pretty much only Down
Under prior to this. I'd like to read others in the series, but the only
ones I can find in the U.S. used book market are horrendously overpriced
and the shipping from Australia or New Zealand would make the used
copies I can find there similarly expensive. Any ideas out there? Thanks!

Rose