We all typically change our windshield wipers once a year because of our brutal winters here in the northeast. You hit your local auto parts store and buy any typical beam blade (flexible blade) for instance. Your looking at 15 to 20 bucks per side for a Chinese blade that will last another year.
Get with the program, buy an American made Silblade for a few bucks more and get a 5 year warranty. You support Americans and spend a lot less per year on wipers for your vehicle.