In Aalst there is this small shop - NOBILIS - which caries nice more niche perfumes.
Now, it's sad to say, but the shop will close sometime in January 2017.
The good thing (for us costumers) is that the have a sale out (30 / 40 / 50 % off)

They have

Aqua Di Parma, Annik Goutal, Bentley, Berdoues, Creed, D' Orsay, Hayari, Houbigant, Lubin, Molinard, Nasomatto, Orto Parisi, Perris, Ruth Mastenbroek, Sherrer
maybe some more
(They also sell good beauty products)

The owner(s) are very friendly, so when you're around, pay them a visit

(Perfumerie Reychler)
Lange zoutstraat 50
9300 Aalst
Oost Vlaanderen