Tanga has a great selection of Star Wars iPhone Cases for just $5 (reg. $29.99) and shipping is free! There are three to choose from: Chewbacca (iPhone 5), Luke vs Vader (iPhone 5) and C-3PO (iPhone 5). The rest are sold out, and these will too!
Also, grab this awesome Darth Vader t-shirt for just $9.99 + free shipping! That's a 49% discount.
(Thanks Mobot)