I have the iPad WiFi 64 due in by this Monday. I want to buy some of the software like pages, numbers, etc so it will be good for what I want/need. I have also ordered the 64GB 3G model to arrive later in the month. If I sell or get rid of the 1st WiFi only unit and make the 3G unit mine, does the store keep track of the purchased apps and allow me to move these apps onto the 3G model or do I have to buy them all over again? Sorry, new to the word of Apple and really looking forward to the ipads, the Kindle is history!