I ordered three books 2 from this site and one from another. The book from the other side - everything flew seamlessly. I paid, received confirmation email, tracking updates etc, a quick delivery. Then this company. First it took longer than average to get my order then the other order never arrived. Even though they did send an email (that is the only accountability I will take - the email went to my spam) BUT when I would look at my order status on THEIR site it still showed as them having received my order etc with no indication on their site that it was "unilaterally cancelled". Turns out it was cancelled because it was not in stock.
OKAAYYYY why post a book and take my money if you do not have it in stock? Based on the prior reviews, seems this is standard practice for them - they list a book as being available and then you rely on that notion and then they will cancel your order.
Clearly, they must run on some archaic system where it does not get updated in real time etc.
So yes you do save money but you make up for it in aggravation. I say proceed with caution.