A few gold coins for your grand-kids - fine. Gold bars? Why?
Are you expecting the "Great Collapse"? If so, don't invest in gold, except for a few gold coins for barter. Instead invest in guns, ammo, MRE's, bottled water and first aid medical supplies.
Storage of gold is "expensive". Where you going to store $10,000. worth of gold? Under your bed? What about thieves or a fire? In the bank? With blood in the streets or after an earthquake your chance of getting back to your gold is slim to none.
Re-think gold as a "hole" to pour your money down. If gold goes to $5k, what do you think milk, bread and gasoline will cost? The worst generally doesn't happen.
Try with http://www.goldeneaglecoin.com/buy-gold they are the best!
silverandgold.com
Specifically I'm looking also for a site that you can set up auto payments every two weeks to buy gold bars or coins. Thanks