I`m thinking of starting drums but my mom wont let me if it is too much to rent a bell kit and all that stuff. How much does it ussualy cost to rent or buy? I`ve been playing clarinet about 4.5 years now so I`m not knew at music.

well, actually it has nothing to do with clarinet. that one u can play anywhere and unless u really have money and need it, u can buy one for not much money.
i don`t know where u live how`s the renting thing, even if u can rent. buying, it depends, second hand ones should be cheaper, and there are some beginners kit that are fine and at a reasonable price. u also can start with lessons and having some practice pads or so, so u`re sure u really like it, u know.