Costco makes buying certain things do affordable. Believe it or not I have bought some expensive cosmetics from their website at much lower prices, be it clinique or olaplex hair treatments. They also carry a limited collection of perfumes at very good prices. It helps to check their website for deals sometimes!
I love Costco. This place is a one-stop shop for bulk groceries, household supplies, and discounted gas. Quality products at the most competitive prices and great service too. Not much more you can ask for.