Amazon [amazon.com] has *LifeStraw Go Water Bottle 2-Stage Replacement Filter, White* for $9.97 - 5% when you check out via Subscribe & Save = *$9.47*. *Shipping is free* with Prime or on $35+... Key Highlights • Compatible with current-gen consoles/PC • Popular among gamers • Good value for the genre Should You Buy? This is a modest discount. Consider if you genuinely need this item before purchasing.