I have had this problem with the company more than once. When you are shopping on their site, they offer a discount. Recently it was $2.95 shipping. So I found a few books that I wanted using the author search and placed the order. They then charged my credit card the amount for the books, plus the full cost of the shipping/handling, not the $2.95 that they had said that they advertised on their site.
When I contacted them, customer service responded, but with a generic e-mail that did not address the issue at hand. It took me at least 2 more e-mails for them to really address the issue. And at that what they said is this :
The search that I performed brought up books that were available through their "BookSearch Plus" engine, and were not qualified for the reduced shipping rate. I thought that this was interesting since the search that I did, did not reveal these books as ones that were only available outside of their website. When I again e-mailed them to say this they said that the ISBN number would be there for a BookSearch book and not a member number. I'm sorry, I am supposed to know this as a consumer using their website? I have seen booksearch plus searches before, and the results come up plain as day saying that they are not available on Doubledaybook club but through BookSearch plus. The books I ordered did not say that.
I have to say that when I told them to cancel the order if they were not willing to honor their comittment, they did so immediately. And they also cancelled my membership before I was able to get back online and do another search for James Rollins books to prove that the search engine is at fault.
I guess that is another way that they get you. They promise you a discount and then don't give it to you, hoping that you don't complain and you will pay the higher amount.