Thumb Score: +16

Amazon [amazon.com] has 2-Pk 10-Oz Biotrue Multi-Purpose Contact Lens Solution w/ Lens Case for $18.99 – $3.80 – 30% when you ‘clip’ coupons on product page – 5% when you check out via Subscribe & Save = $8.54.
Shipping is free with Prime or on $35+ orders.

Savings
Coupon price $15.19 (check and activate [amazon.com])