i wouldn't advise anyone to buy this yet, especially not from stores that don't allow returns. there has been a large amount of reported problems with it, here are a few:
http://www.androidauthority.com/nexus-7-backlight-bleeding-issue-spotted-102236/
http://www.theatlanticwire.com/technology/2012/07/most-common-complaints-about-google-nexus-7/54792/
http://forums.androidcentral.com/google-nexus-7-tablet-forum/203029-received-7-defective-nexus-7s-google-now-refusing-rmas.html
Apparently, there are new batches of the product coming out that have a less chance of having a problem, it is discussed in one of the links above.
At the moment, there is no safe option for us lebanese, as if we buy from outside and ship, it would cost alot to return it if it has a problem. If we buy locally, the shops don't accept returns as none give you a valid warranty.
The best option is to wait.