I recommend
http://raspberry-pi-buy.com/ , he's a really nice person that has Rpi's in stock and many needed accessories. He's in the US so if you use a service that provides you with a paypal account and US address it would be great.
Note that although the Rpi model B cost is 35$, it actually will cost you lots more in order to get the essential parts to run the Rpi:
- first it will cost you about 50$ to get the Rpi to lebanon
-you will need a screen with hdmi input, or an hdmi/vga converter box, or any tv screen with RCA input
-usb keyboard and mouse
-SDcard preloaded with the OS of your choice -and I would recommend you buy a preloaded one and not try to setup one yourself
-a protective case for your Rpi , especially if you're going to ship it
-a WiPi to connect the Rpi to WiFi
Finally I encourage you to get one and experiment ;)