BBTS just announced two hats for pre-order including a baseball cap with Goku vs Vegeta. There is some very nice artwork under the bill and black/gold text across the crown. You can pre-order yours for $21.99.
The second is a blue Goku sun hat with a SSGSS Goku design on the neck drape. This will run you $26.99.
Both hats will ship sometime this month!