Coinmarketcap includes Upbit in their price calculation, but Upbit has not had a working SBD wallet for months if not longer. People are willing to sell there at a lower price because it is the only way to get their value out of the exchange. It doesn't indicate a market price for real SBD which isn't trapped there.
I would consider the Bittrex and internal market prices as closest to a fair market value.
I don't think so
While
Coinmarketcap says
The price on internal market seems to be around
Coinmarketcap includes Upbit in their price calculation, but Upbit has not had a working SBD wallet for months if not longer. People are willing to sell there at a lower price because it is the only way to get their value out of the exchange. It doesn't indicate a market price for real SBD which isn't trapped there.
I would consider the Bittrex and internal market prices as closest to a fair market value.