Since production has ceased, your best options are reputable resellers and specialty "fragrance vault" sites:
When shopping, it is crucial to know which version you are getting, as their profiles differ: Gucci Eau De Toilette 50ml Spray - The Fragrance Shop buy gucci premiere
Expect to pay a premium. Because it is rare, prices for a 75ml bottle can be significantly higher than its original retail price. Eau de Parfum vs. Eau de Toilette Since production has ceased, your best options are
Stores like Fragrance Vault or Ubuy may occasionally stock rare, unused "new old stock" or testers. Since production has ceased
You can find both new and used bottles on sites like eBay and Mercari , which frequently list various sizes and concentrations.