Hi, im from Kuching and I regularly order from BD if the books im looking for are not in AcmaMall.. Personally I like BD's service.. even though they mail books using normal AirMail (sometimes originating from the UK, sometimes from Belgium), the packaging are good enough to protect the books (envelope with bubblewrap inner layer, or box with bubblewrap if books are bigger)..
i have purchased up to 20 books so far, and i have received 19 of them. the one book i didnt receive was clearly overdue and since it is Airmail there is no way to track it. I've emaild BD and they are kind enough to offer either a refund or a new copy to be sent

ohya, even if you order more than 1 book in one single order, all books are sent individually.. so some may arrive earlier than others despite being in a single checkout/order.
P/S: BD used to include cool bookmarks back then, i got 3 Periodic Table bookmarks and a few recipes bookmarks.. funny cause I'm lecturing Chemistry as a job

recently though, no bookmarks..