Was that just for the refill, or the whole blade?
Nobody seems to sell just the refill rubber anymore, they make more money on the whole blade assembly. I used to be able to buy refills for $6 a pair. So, for refills I just buy the shortest Anco blades I can find remove the rubber and shorten them. The rubber is stiffened by a metal strip on each side. I took them out, and cut them to the length of the blade. Then cut the rubber to be just a hair longer, and insert them in the original blade. Next time, I just remove the rubber and re-use the metal strips. You wind up discarding the metal blade assembly, but i toss it in with the metal for recycling. It works out to about $16 for both.