Kirkland Signature Alkaline Water, 1 L, 18-count price history at Costco
Costco item #4165934 · last recorded November 2, 2026
Latest$10.69
Lowest$9.99
Highest$10.69
Typical$9.99
Last dropped: No drop recorded in our data. We recorded 2 price changes since June 24, 2026.
Recent price changes
Date
Price
September 12, 2026
$10.69
September 2, 2026
$10.34
June 24, 2026
$9.99
Can you get a price adjustment on this?
We have not recorded a drop for this item. If it goes on sale within 30 days of your purchase, you can ask Member Services (or use the Costco.com "Request a Price Match" form) for the difference, provided it is still at the lower price. Costco can decline at its discretion.
Get alerted when this price drops.
ShelfVerse tracks Costco prices and checks your purchases for price adjustments you may be eligible for.
What is the lowest price of Kirkland Signature Alkaline Water, 1 L, 18-count at Costco?In our records since June 24, 2026, the lowest recorded price was $9.99 (most recently on June 24, 2026). Prices vary by warehouse.
What is the typical price of Kirkland Signature Alkaline Water, 1 L, 18-count?The typical (median) price over the period we track is about $9.99; the latest recorded price is $10.69 as of November 2, 2026.
How does the Costco 30-day price adjustment work?If something you bought goes on sale within 30 days of purchase, you can ask for the difference. The item must still be at the lower price when you ask, and Costco can decline at its discretion.
ShelfVerse is an independent app and is not affiliated with, endorsed by, or sponsored by Costco Wholesale Corporation. Prices are recorded from public listings at a US warehouse we track and vary by warehouse and region; Costco may change prices or decline price adjustments at its discretion. Product names are trademarks of their respective owners.