Amazon [amazon.com] has 14-Count Soft Scrub DuoCubes In-Tank Toilet Cleaner (Sapphire Waters) for $13.20 - $2 when you 'clip' the coupon on product page - 5% when you check out via Subscribe & Save = $10.54.
Shipping is free with Prime or on $35+ orders.

Price
$5.45 lower (34% savings) than the list price of $15.99
$3.05 lower (22% savings) than the previous price of $13.59

Savings
Save an extra $2 on your first Subscribe and Save order. (check and activate [amazon.com])

Subscribe & Save
5%: $10.54
15%: $9.22
Add to next delivery [amazon.com] (with free shipping)
fillers [amazon.com]

Customer reviews
4.3⭐ / 5,134
500+ bought in past month

amazon.com/dp/B0C2XK1LYV [amazon.com]

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