AnimeNews.biz reports that the first episodes of Fullmetal Alchemist, Ouran High School Host Club and Soul Eater will be free, while Samurai Champloo and Afro Samurai eps are 99 cents per episode. You can also get any of these shows at a discounted price for the entire season (30% off). Robotech: The Shadow Chronicles and Afro Samurai: Resurrection are also on sale.
This whole celebration goes on through August 3rd, so there's no reason not to snap something up, especially if you have a long flight to get to Comic Con and need something to watch. Going to pick anything up, my friends?