In November 2019 price of EDC temporary for 1 day raised to 0.015 and then it falled back to 0.006. It was somethink like market manipulations.
I remember how this case of temporary raise was discussed here on the forum. But after that the price of EDC returned to 0.006
Such things happened with many coins. Cryptocurrency industry is very volatility. After big growth there is a big fall