In the French of Québec, you’ll come across the verb magasiner in the sense of “to shop.”
A shopper is un magasineur or une magasineuse.
Here are examples of ways that I’ve heard these words used in the past few days.
magasiner un matelas
to shop for a mattress
magasiner en ligne
to shop online
magasiner l’esprit en paix
to shop with peace of mind
une magasineuse compulsive
a compulsive shopper
In this Urbania interview, you can read the confessions of une magasineuse pathologique who, among other things, owns 200 pairs of shoes. She says:
Quand j’achète quelque chose, c’est comme un fix. Je ne prends pas de drogue, mais je m’achète des affaires. Mon buzz dure une heure maximum.
When I buy something, it’s like getting a fix (of drugs). I don’t do drugs, but I do buy stuff. My buzz lasts a maximum of one hour.
Where do you put 200 pairs of shoes?