This isn't on Costco.com - you'll have to go in-store to buy:

http://www.bikeforums.net/showthread...y-lights-setup

2x200 Lumen Flashlights for $19.99, no waiting for shipments from China - If you don't have a Costco membership then use this as an excuse to offset the cost or go with a friend who has one.

/thread