Avnet Electronics Cust. Services: 1-800-408-8353
http://www.avnet.com/
-->Component Part Search: SFH485P : $0.3480 each, no minimum I think, $8 handling fee + $?? for shipping.
DigiKey Cust. Services: 1-800-DIGI_KEY
http://www.digikey.com/
But you can only make a search with SFH485 (without the final P)
$0.57 each, no minimum, $5 handling + $?? for shipping.
In both instances, it seams they are rounded head, not flat as what is described here.
Could be wise to contact them before committing.
Hope it helps,
HugoC
Note: Could you make a follow-up on what you found and the total pricing please?