Hello: We currently have about 300 Book Ports in stock. Once that supply is gone, we will no longer be selling the Book Ports. However, even though we won't be selling them, we will continue to do repairs on these units, will part supplies last. We have enough parts to last another couple of years. It is difficult to tell you exactly how long a transfer will take, because it depends on a number of factors, such as the speed of the computer, the size of the file and whether or not you are transferring the material as is, or whether you are doing some extra processing and conversion, as converting text to MP3 files. If you are transfering an Etext book, with no conversions, it will transfer within a matter of seconds. An MP3 song of about 3 minutes in length (which is about 3 meg.) will transfer in about 1 minute or so, but quite frankly I've never timed it, so I'm just guessing here. If you're sending an audio book, it could take anywhere from 5 minutes to 20 minutes or longer. I can't really answer that question. Therefore, when transferring large audio files, it is best to transfer one file at a time, as it gets quite lengthy, so it is better not to tie things up. The battery life depends on the listening material and the type of battery. If you are listening to text files, you'll get about 50 or 60 hours on AA alkalein batteries. With audio files, you'll get 20 or 30 hours. The new Book Ports will be released sometime this Fall. Sincerely, Pamela Rader, TECHNICAL SUPPORT American Printing House For The Blind 1839 Frankfort Ave. Louisville, KY 40206 PHONE: 1-800-223-1839, Ext. 307 >>> mohitkhatanhar@xxxxxxxxx 05/03/07 03:22PM >>> Hi there, since i would like to buy a book port, I would like to no a few thinks, about it, , since i have never used 1, 1, how much time does it take to transfer both the e text, and audio, to it? for igzampil a 100 m b ? audio book, and e text? 2, how much does the batry work wile reading an audio book, and e text? and last, after the new bp is in the markit, will there be surviss support for the old 1, in kase if any part faylls will there be an replaysment for that part, i meen will the old part's be avelable? please get back, by and take care, mohit.