Costco In-Warehouse Offer: 180-Ct Kirkland Signature Fast Acting Dairy Lactase $13 (Pricing/Availability May Vary)

Costco [costco.com] has *Kirkland Signature Fast Acting Lactase, 180 Caplets* for *$3 off* until *November 22, 2026*. The online price is $19.99 - $3 = $16.99. But the in-warehouse price is $15.99...