If you want to sell some DEC, then STEEM-Engine is the place to be.
I rather keep collecting it. I currently have less than 4000. I currently have 3987.20 Dark Energy Crystals (DEC) in-game, and that it is. But thank you for the suggestion. I will check the Steem Engine from time to time. Since the start of the Hive blockchain I have not really checked it so far. I used and I am using the Hive Engine.
