Amazon has the Anco 31 Series Windshield Wiper Blade (Sizes include: 20-Inch / 22-Inch) on sale for $4.27 with free shipping on $25+ or with Prime.

• Also between $5 to $7: 11-Inch / 13-Inch / 14-Inch / 16-Inch / 19-Inch / 21-Inch / 24-Inch