The cost of Kirkland Vodka at Costco can vary from store to store but I've seen the Kirkland Vodka for sale for $19.99 at one store and then another Costco was selling the same Kirkland Vodka for $25.00
But even then the Kirkland Vodka is still cheaper than buying the same type of Vodka from other stores which can be as high as $60.00 to $100.00 depending on where you buy it from.
The Costco Vodka is just as good or sometimes better tasting than other more expensive brands of Vodka from other stores.
Costco is pretty cheap when it comes to buying most things including the Vodka so that's where I buy most of my stuff I need or want including the Vodka when I want Vodka but I don't buy the Vodka often or drink it too often but when I do I go to Costco and get the Kirkland Vodka and usually pay around $20.00 to $26.00 per bottle.