Actually, from the beginning, Charlie and his sister never intended to push the silver prices this high; they knew very well they didn't possess that kind of energy.
When they set five dollars per ounce (Sol) as the ultimate target for silver prices and pushed forward, many people joined in spontaneously, and the price of silver kept climbing.
The higher the silver price, the more people wanted to stand with them, initially just those mining tycoons.
Higher silver prices meant their income was also increasing, and doubling at that, leaving them no reason not to support Charlie and his sister, much less give away their potential earnings.
If they wanted to continue speculating, they needed more capital, as the freedom in international markets is even more "liberal" than that within any closed market.
The market's price fluctuations were also faster, more intense.
