Click the 50% off coupon. (may not show up if you already used this coupon last month.)

Here’s the breakdown
Item(s) Subtotal: $ 9.95
Shipping & Handling: $ 0.00
Subscribe & Save: -$ 0.50
Your Coupon Savings: -$ 4.98
Your Coupon Savings: -$ 1.00
Total before tax: $ 3.47
Estimated tax to be collected: $ 0.87
Grand Total: -$ 4.34