Perfume value
Is a perfume discovery set worth buying
A discovery set can be worth buying when trying several unfamiliar fragrances answers a real preference question before a larger purchase. It may add little value if you already know the exact scent you want.
A HUME Fragrance buying guide

State the learning goal
Comparing fresh and woody directions is a useful question. Buying a kit only because it contains many items is less informative.
Check relevant variety
Count how many included choices actually interest you. A smaller useful selection can teach more than unwanted variety.
Plan the trials
Use samples individually and repeat favorites. Exploration need not result in a full bottle for every scent.
Try this before you buy
List three decisions the set would help you make before comparing its cost with a known favorite.