I am debating on buying a generator and was wondering if it made economic sense. The last time I ordered Colloidal Silver from bio-alternatives, it cost me $70 for four 16 oz bottles and it lasted me for six months. A CS Generator costs anywhere from $239 for Silver Edge or $400 for Silver Lungs. Also, I am thinking that the quality of CS from bio-alternatives is probably better than CS made at home from generators.