GRP is GRouPcoin, has been for years. A new different ticker is needed for graphene...
-MarkM-
I'm not the Graphene's dev, anyway Graphene sounds more serious that Group, I think
But nevermind, my post was only about the high price of the coin. It's relatively new (2 months), hard to mine, wonderful to stake, this is the only exchange, and the price is quite good for those who believed in this coin in its first days (like me)
But I think it's worth that price.