I'm not sure Schwab is the place to play with penny stocks: they have a 999999 limit per trade. When the price dropped to .0002 I tried a "market buy" and the price popped right back up to .0003.
If I could I would try buying 100 shares at .10 but I know they would adjust it to .0003 in the current market.
It would be interesting to learn how these S.O.B.s manage to get a 100 sale at .0002 past an ethical brokerage.