My Toyota dealer charges $12 for a single wiper blade and sells only the entire assembly-the metal arm that holds the rubber blade and the rubber blade. I have tried less expensive replacements by Ansco, etc but all cause an irritating "flopping" noise at the end of the wiper stroke when the blade reverses direction.

Has anyone found a source for less expensive blades that fit well enough to not "flop" ,or better yet a source for the rubber blade only(seems such a waste to throw away the metal arm each time)?