Period cups

I’m 14 and I’ve been seeing things about period cups all over the internet lately and I kinda wanna try one out. I just feel like it would be better for me to not have to be changing a pad/tampon at school and I won’t have to worry about it for 12 hours. The only thing is they are soo expensive I don’t want to ask for one and then not use it. I also have 2 younger brothers (13 and 11) and I know you have to boil them to clean them properly once a month and I don’t know how I can do that with those two always home.

Any advice or tips about them ??