After Hours Formalwear is a good place to go if you are looking for tuxedoes to rent. They have a very nice selection and have all different styles. This is especially good for guys in high school who are going to a prom and need a tuxedo.
Prices are comparable to other similar stores. Best idea would be to buy a tuxedo, but definitely wait until you stop growing so you don't simply throw away your money. When you rent, you get everything that comes with it and you usually need to return with a short amount of time.
I would recommend considering this place if you are shopping around for formal wear.