It will be very difficult to dump the market further(it is possible, but it will be very difficult and dangerous), because the miners are already working at a loss on some coins, like ethereum. Bitcoin almost fell to mining cost price, so, i think, it worth to start to buy now.
I am already buying a lot, keeping my bag full. Every time that I accumulate profit, I put it into ethereum as ethereum is a good investment. I hope it rise soon.