Establish a price range for , guaranteeing it's cash you can afford to lose. https://kuicy.net/%EB%AA%A8%EB%B0%94%EC%9D%BC-%EB%B2%A0%ED%8C%85-%EC%82%AC%EC%9D%B4%ED%8A%B8-%EC%8B%A0%EB%A2%B0%EC%84%B1%EA%B3%BC-%EC%95%88%EC%A0%84%EC%84%B1%EC%9D%84-%EA%B0%96%EC%B6%98-%EC%84%A0%ED%83%9D/