I'm still into this mining. I found that the computer is very important. I had a weak computer with which I was always at a loss. I changed his processor and added memory - I'm already in profit. But there is one peculiarity. If I buy a lot of bees at once, I will most likely lose. If I buy the same amount of bees several times, the profit is about 20-30 percent in total. I don't know why, but it always does.