This is truly a rare deal from a major brand!
Yves Saint Laurent Beauty has Select Yves Saint Laurent Fragrances & Lipsticks on sale for Buy One, Get One Free when you apply promo code MOM at checkout. Shipping is free on orders $75+.

Note, most women's fragrances are on backorder. You may mix and match, but the lowest price item will discount to free. Only items from this link are on sale.
https://www.yslbeautyus.com/buy-one-get-one/
Examples (prices after promo code MOM)

• Men's Fragrances
  • 2-Oz L'Homme Cologne Bleie Eau de Toilette 2 for $78
  • 3.3-Oz La Nuit de L'Homme Eau de Toilette Spray 2 for $97
  • 3.4-Oz L'Homme Le Parfum 2 for $118
• Women's Fragrances & Lipsticks
  • 3-Oz Mon Paris Eau de Parfum 2 for $128
    • on back order (in stock 5/9/22
  • Enjoy