It will be great to trade DEC on the "Blocktrade us" exchange. Although Hive-engine is offering a functional operating trade with Hive, the process is way complicated when you have LTC or BTC.
The prices of one DEC was kept in the range of 0.0025 and 0.0018 Hive for the whole month of August. The stability on this market is the sign of consolidation. The game players might have spent significant numbers of DEC tokens on the Splinterlands instead of selling to Hive. It is also important to consider the accounts that hold and accumulate DEC token for long period of time.