Hi and welcome to the Forum!
As far as buying one from a store, Apple has set the prices on these, so you will most likely see the same prices everywhere. Apple does have refurbished iPads, not sure if it's all the time and every store and these are sold cheaper than new ones but with the same full warranties. As far as used try Craigslist, eBay that type of website but be mindful that these will not have warranties and know what you're buying and be very careful of who you are doing business with as far as when and how you do the changeover.
The IPad Forum is a community of members from all walks of life and from all over the worldcoming together to share our experiences and to help each other to learn about this wonderful piece oftechnology the IPad.There is a wealth of information already here in the many threads we have so doing some searcheswill answer most of the questions that you have. If then you can't find the answer you are seekingthen by all means post your question. You will find many friendly and informed members here only too willing to help you.
We also have our own App - Discussion Forum for IPad Users. It is a very simple app to navigate.
Reading the IPad Manuals is a great place to start, so please download a copy of these.
http://www.support.apple.com/manuals/ipad/
A very informative thread from which you will learn many tips and shortcuts for the IPad
http://www.ipadforums.net/ipad-general-discussions/21590-tips-tricks-those-us-who-dont-know.html
We have rules like any Community, so please read these also.
http://www.ipadforums.net/forum-rul...um-rules-everybody-please-read.html#post14697
Once again we welcome you here and are so pleased you have joined us. Enjoy!!
Sent from my iPad using iPF