Amazon has 2-Pack 10-Oz Bausch + Lomb Biotrue Hydration Plus Contact Lens Solution w/ Lens Case for $18.98 – 5% off when you checkout via subscribe & save – $6 off when you clip the coupon on the product page = $12.03 ($6.01 each). Shipping is free w/ Prime or on orders $25+.
Note: Coupons are usually limited to one per account.