I need some fake hair extintions?

my freinds at my school always wear those fake hair extintions, and i wanted to know wear to get some. Im in 8th grade and i have medium wavy brown hair, but i straighten it. I dont really like going into Hot Topic. I live somewhere around Plymouth, Michigan (dont want to give the exact place). And i want to know how much they cost. (PLZ ANSWER BEFORE JUNE 4TH PLZ!! =])