I've ordered adrafinil through http://www.antiaging-systems.com/ and had good success. They sell modafinil as well, but I didn't like adrafinil so I never bothered.
Can you possibly link modafinil? I tried looking around the site and couldn't find it through the product list. Perhaps I am navigating wrong, as is common.
Ah that sucks, it looks like they've stopped selling it. I'm sorry for the bad link.
Adrafinil helped my focus but totally destroyed my sense of humor. Nothing seemed funny at all and I missed a bunch of subtle jokes. It was kind of like medically induced Aspergers for me.