What type of volume are we talking about? Is he going to sell to distribitors, retail or just at gun shows?
The art work, printing and min amount of boxes could run into the thousands of dollars. If he is just starting out and selling locally, I would suggest he use the white boxes and just have a fancy label printed that he can stick on them. The boxes can be purchased from Midway USA in lots of 100 and since he needs a FFL to sell ammo he could contact Midway and see about getting a dealer discount on their products.