Be aware. The company appears in the process of going bankrupt. Orders go in but they don't go out.
I used Book Depository in the past without issue. But I ordered my book on Dec 6th and it didn't show by the January 17th latest delivery date. I e-mailed them and a customer service rep told me it didn't actually shipped on January 8th so I needed to wait until February 5th. Not shockingly nothing arrived either. The latest customer service rep is trying to by time by getting me to go down to the post office despite that larger packages from the book depository have been mailed to me without issue. If a company is asking you to go down to the post office yourself and find a package they shipped to you they're pretty much admit they're bankrupt, right?
Judging from how many similar complaints I've found online from the past couple of days this company either doesn't have enough money to ship out or no longer has access to books. I'm lucky that I'm only out $8 for one book. I feel really bad for people who are losing more than that with their orders. But mostly feel bad for the people at the book depository who apparently won't have jobs soon. Sad news :(