according to this:
http://translate.googleusercontent.com/translate_c?spm=2013.1.0.0.vOM5Uh&depth=1&hl=en&ie=UTF8&prev=_t&rurl=translate.google.com&sl=auto&tl=en&u=http://item.taobao.com/item.htm%3Fid%3D26136168590&usg=ALkJrhiVdhqkLTSjKN41Uyf6bp8vwnN1JQ

Erupters are 88 Yuan that's what? $17 USD?