Thumb Score: +14

Amazon [amazon.com] has 50-oz Softsoap Aquarium Liquid Hand Soap Refill for $5.79 – $1.80 when you ‘clip’ the coupon on product page – 5% when you check out via Subscribe & Save = $3.70.
Shipping is free with Prime or on $35+ orders.

Savings
Save an extra $1.80 on your first Subscribe and Save order. Limit 1 item. (check and activate [amazon.com])