SBD Market Price Imbalance (Between Exchange & Even Within the Same Exchange)

[dico]

The price of SBD is imbalance between exchange and even within the same exchange.
Between Exchange:
Poloniex $7.52 Vs OpenLedger $13.81

Internal Exchange:
OpenLedger SBD/BTC $13.81 Vs OpenLedger SBD/BITUSD $6.55