They are only that cheap because botnets or claymore or whatever (SPV mining? Is it true?) constantly dump redistribute healthy amounts into the market.
You forgot the whales that are keeping the price down so they can buy more.
This is possible, and I suspect there is an element of truth to it; however this can be a dangerous game for the whales in question. I must say the current very low volume after a significant correction is very indicative of this kind of behavior.