Macy's offers the Star Wars Boys' Dark Side Graphic T-Shirt in Heather Grey for $5.73. Pad your order with a beauty item (they start at $4) to bag free shipping; otherwise, shipping adds $10.95. That's $12 off list and the lowest price we could find. It comes in sizes S or M.
Think Geek offers the Star Wars R2-D2 & C-3PO Best Friends Necklaces Set for $3.99 plus $5.95 for shipping. That's $9 off and the lowest price we could find. This necklace pair includes two 18" chains and says "best friends" on the back of each pendant.