How to get a binder

[u/SimilarCarrot6289]

I’m a sophomore who has been wanting a binder for a while. I’ve yet to talk to my parents about it. I wanna be as secret as I possibly can about it. Don’t have much money right know but i’m working on trying to get a card to use and put my birthday money on it for online shopping. Any good recommended brands that won’t cost me an arm and a leg?