I'm a teenager, and I really want a binder. But I don't want my parents to know. Are there any ways that I can get one without my parents knowing, or am I just screwed?

You can get a friend to order it for you and not wear it around them.

ya get a friend to order one for you
my mom wouldnt let me get one my self because she wouldnt let me spend the money on one so my friend who is freaking amazing sent me 2 that were to big for him.

Put money on a gift card type thingy and then order one and have it delivered to friends address.

get one of those $50-100 visa card things.
Order it online and have it shipped to a friend's house - obvoiuslly one who has parents who won't care and/or are accepting

I plan on doing this... the issue is getting the money ATM
but my birthday is coming up and dad just finally got a job, so that shoudln't be an issue in a week or two

A velcro back brace you can get at any drug store works fairly well.  Cover with a plain white tee shirt and a loose-fitting button down.  Works fairly well.


Jay

I ordered one to my house and just got the mail before my parents did. That was before my mom asked what I was wearing under my tank top O.O (she knows I have a binder now)

I second Jay.
That's what I use currently because I have NO money. D8
It works well and also but some powder  in between your breast to reduce sweating issues if you go with that back brace. Back braces comes with straps. So, just cut them off if needed. =)
Mine works well.
of course I have A sized breasts and a fairly average frame. D8

I ordered it from my own credit card and had it shipped to my girlfriend's house, and stored it there until I was ready to pass full time, even at home.