If in the US this is the cheapest I have found;
I purchased 10 SFH485P for $6.81 including shipping ($2.07) from Digi-Key.
So I got 7 spares to build clips or hats. There was a price break at 10 pieces.
10 pcs for $.44 each or 1-9 for $.77 each. Almost twice as many for same price. (10 versus 5)
http://www.digikey.com/product-detail/en/SFH%20485%20P/475-1470-ND/1228122