Can be sold on exchanges where approved, you will be able to obtain some SUP using Steem/SBD
https://steemit.com/steemshop/@sydesjokes/use-the-buy-sell-buttons-to-trade-superior-coin-with-sbd-steem
https://steemit.com/superiorcoin/@sydesjokes/check-the-superior-coin-exchange-on-steemit