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 For me, it's availability - I've bought frags from guys out West simply because I can't find some of those species/varieties in Ontario.
 With regards to everything else, I can find most things locally, but I still deal with out of town suppliers/online shops.  Why?  Because the places that stock the things I want and have the expertise locally are also associated with bad business practices, poor customer service and generally cost more.
 
 For me, items 1, 2 and 3 all go hand in hand.
 
				__________________Spontaneously Purchased Scleractinian anonymous
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