Thumb Score: +23

Amazon [amazon.com] has 30-Pack 0.01-Oz Refresh Optive Mega-3 Lubricant Eye Drops for $17.97 – $4.28 – 35% when you ‘clip’ coupons on product page – 5% when you check out via Subscribe & Save = $6.50.
Shipping is free with Prime or on $35+ orders.

Savings
Coupon price $13.69 (clip on the product page)
35% off coupon applied. First Subscribe & Save orders only. (check and activate [amazon.com])