Better even is to use Bittrex. Coingecko is ideal to check rates, SBD has been trading at much more than $6 recently, but not on every market.
To be honest, there isn’t much going on. Many professional traders invested in BTC for the free tokens with the 2X fork, BTC has since only grown and many have diverted back into alt coins. Several alt coins have found what were considered reasonable levels (again), while others are a perfect ground for traders to play the volatility, pump/dump game.
With only 3.6m tokens available, any larger traders or whale with some disposable liquidity can impact the SBD market, especially since SBD is daily cashed out by many thus always bringing new SBD to the game.