"Thirty Years Among the Dead" and "Healing Lost Souls" are both also available new with free international shipping from _www.bookdepository.com
And also with free shipping from _www.fishpond.com.au
They are also on _www.booktopia.com.au at a slightly higher price (with AU$6.50 per order for shipping within Australia). The Booktopia books mostly ship from a warehouse in Australia, so might arrive quicker, while the other two sites would ship from overseas.
I think if I were reordering from Amazon, I would try ordering the two books together again.
The Amazon website has this:
"Orders that are returned to us as undeliverable are not able to be re-shipped. If you would still like to purchase items that were undeliverable, you are welcome to place a new order on our website." - _http://www.amazon.com/gp/help/customer/display.html/ref=sr_1_1_acs_h_1?ie=UTF8&nodeId=3608471&qid=1401410730&sr=8-1-acs
And also a page about "Reasons for Undeliverable Orders" here:
_http://www.amazon.com/gp/help/customer/display.html/ref=hp_left_v4_sib?ie=UTF8&nodeId=201117330
Of the above sites, I order from Amazon most often, as they tend to pack their books better in thick cardboard, compared with FishPond and Bookdepository. Sometimes I order from FishPond or Bookdepository when the prices are slightly lower. Booktopia is mainly for Australian customers. I haven't ordered from them, but have heard they are becoming a popular site in Australia.