SWEET MOTHER that's a huge chunk of change. Would you be ordering this from a fursuit maker, or a Halloween costume shop? If a fur suit maker, there are MANY MANY people out there who do them. You just have to keep your options open and look around. Though my advice, just start off with a partial, ya know ears, tail maybe some hands and feet, maybe a head even... But you can definitely find a cheaper suit some where.
As for your parents freaking out, there's no stopping that and I wouldn't blame them.