Based on the provided reviews, the Costco Louisville liquor sale offers an excellent variety of spirits, including bourbon, vodka, gin, tequila, scotch, and a wide range of wines and seasonal specialties. Prices are consistently noted as great, hard to beat, and result in significant savings compared to other local liquor shops, with larger format bottles providing even better value. The selection of bourbon receives specific praise. The liquor section is described as well-organized, clean, and easy to navigate, with staff noted as friendly and helpful. The Kirkland Signature spirits, especially those made in Kentucky, are highlighted for their great quality at a fraction of the cost. However, some reviewers note that certain popular Kirkland items, like the bourbon and dark rums, are not regularly stocked and can be difficult to find. The beer selection is criticized for being limited and sometimes overpriced. Overall, the location is considered a reliable and affordable choice for members seeking quality, selection, and convenience for stocking up on liquor.