Here is one theory of why the price is going down right now.
With low volume, one or two whales can do big changes in market price when they sell. 5 days ago, one whale sold 1.100 coins pushing the price down to 16$. The whale: https://bchain.info/MNX/addr/XJ4zhfaKEfa1WFQMAUDN3QhYULY1t3gN56
Then you have https://bchain.info/MNX/addr/XBnG1evWMf51dkj77auLoYJYxepLCmoxSb
There is atleast two whales selling interest profit above 10k MNX.
This is pushing the price down when there is so low volume. We need to get the volume up.