This is normal, the price is adjusted, plus some users start selling their assets because they are afraid that the whole market is falling.
The functional of the marketplace has been launched. It is possible to buy goods using EDC. I expect that the fall of price of EDC will stop.
EDC Blockchain has a big community and a lot of users of the wallet. A lot of people participate in leasing program and they can spend some of the profit from leasing program to buy some goods in marketplace.