So i'm 17 and have a job where I get paid $9 and hour. I bought the case, psu, hard drive and cooler for my pc i'm planning to build but my parents want me to send it back. I love them to death but they are probably the most ignorant and stubborn people I know, they never want to acknowledge that anything they say towards me could even be percieved as incorrect, so i'm really nervous thinking that I won't be able to convince them, since and friend who knoes about pcs and I have been planning this for a while. Help?