Also, remember that cases of ammo are heavy so factor in your time labeling and taking to your local shipping center. If you find your selling 100, 500, 1000 cases a week you will find that you will spend allot of time packing it around. Make sure you factor that in so you are making some money. You will need a temp controlled warehouse sometime also so you can keep a good stock and not have your customers waiting for your next shipment. There are a ton of gun sites like gunco.net, ar15.com, snipershide.com and much more that will clean you our if you offer decent pricing. Good luck and keep me updated.