When I place an order with Muttaqun Foundation, I know that the Islamic material will be delivered promptly and in a professional manner. Along with providing information for a fee, they have a wonderful website that is packed with timely Islamic information without the biddah. These books you sent are wonderful. Alhamdulilah, I'm very happy about what you've sent this way. Few websites can overcome that obstacle like your site has, but Alhamdulilah you have a good reputation with Muslims for being a reliable source.
Books have a greater sense of believability.
Sometimes people will believe almost anything they see in print. That can be good and that can be bad. But when it comes to giving dawah, I think putting a book in someone's hand is powerful. A book by reputable authors such as the books in your store. JazakAllah for bringing us good dawah.