25% gain of what though? If you're only buying 1,000,000 shares at .0004 a 25% gain is pretty minimal.
It would serve the stock better if all the people stacking on the bid at .0004 slapped the ask instead. It's much harder to fill orders at .0004 than at .0005. So sure, you might get a 25% gain, but really you're only getting minimal gains while pronlongoing the amount of money you could actually be making