Windex Touch-Up Cleaner is on sale at Kmart. Use a printable coupon to get four bottles for only $1.34 each!

Use one $3.00/4Windex, Scrubbing Bubbles, Pledge, or Shout products, any combination (coupons.com)

Final Price: $1.34 each, when you buy 4

If you would rather purchase only one bottle, try this deal:

Use one $0.50/1Windex Product, any (coupons.com)

Final Price: $1.59