A bit of everything. Mostly designer clothes (Armani, Cavalli, ...)
I also use the money I make online for alcohol, partying, gym membership, supplements, medication, ...
A small percentage goes into savings.
Btw OP I wouldn't really recommend Gucci belts tbh though I might've just gotten unlucky. Mine broke down within a year after purchase, the leather started coming off.
It also took Gucci 2 months to ship the belt to me. European support wouldn't respond so I had to call an American gucci rep who then contacted the EU department on my behalf and finally got my order shipped. All in all a horrible experience. Buying retail wasn't really an option because the store is literally in the other side of the country for me.
I've been to the retail store once and the service is also despicable. I wear designer so they were really nice to me but they literally told my friend (she prefers a sort of hipster/hippie style) to stop looking at items and leave because she didn't look like she could afford it.
Nothing but negative experiences with Gucci.
Armani on the other hand has always treated me like royalty and is by far the best shopping experience I've had. Very good support and extremely nice employees.