Where to buy 1 ounce gold bar or bulions

Hi All,

I used to buy 1 ounce gold coins or bars, since we moved to a diff state, thinking of buying it online.

Any pointers will be helpful apart from ebay and kitco., also I like to know the difference between cancadian maple leaf, perth mint, credit sussie?

Thanks

Where to buy 1 ounce gold bar or bulions