Order them from hparts.com. You can get OEM refills for 2 bux per. Shipping is a little high, but if you need other things, the cost stays around the same and the prices are still better than dealer.

Or, just go to the dealer!! To me, wiper blades and refills are just like brake pads: aftermarket may be easier to get, but for the price and performance you cant beat OEM stuff bought online from a good Honda place.

-Chris