The lowest I had seen them was just prior to COVID when I first learned of their existence. I saw them at $12.99 each. Don't recall the cost of the refill kit. Since COVID prices shot WAY up. The $44.95 for the refill kit, and the $14.99 for the refillable bottles at REI is the lowest price I have seen since COVID messed the world up. Honestly I would LOVE to have been able to grab the refill kit and bottles at the prices you showed... Sweet!