Someone just traded COMMs for 500 Satoshi on https://www.allcrypt.com/market?id=434 I don't know if this was intentional or accidental mistake but it happend ;p
This is how shitty exchanges exploited to paint charts, there is no best match. Same shit as cryptorush.
You might be right actually.
But right there I guess, buyer simply missed a zero placing buy order.