Attend the local auctions and trades. You will not find any better frags anywhere and getting them local saves a ton on shipping and losses.
AZ FRAG is a group of very dedicated local coral farmers dedicated to bringing rare and unusual frags to AZ reefers at a reasonable price. All their proceeds go back into buying more and better colonies to grow out for future auctions. It has been a great success for those of us who do not like buying livestock and corals online with their heavy losses, especially in summer months.
AZ PROP is not really a club or organization as much as it is a group of likeminded hobbyists who like to trade, barter, donate and promote the hobby. I have been known to donate many many frags to newbies myself and its how I got started in the hobby decades ago.