How old is this Dior Addict?

My dad found this guy selling a bunch of 2000s celebrity perfumes (Lady Gaga, Beyonce, Britney Spears, Kim Kardashian) that his cousin hoarded throughout the years. This bottle was pretty much the only one that was worth more than $50 new and wasn’t affiliated with a celebrity. Is there any way to tell how old it is, and moreover, are discontinued celebrity scents valuable?