Half of my Monero's are for sale at $3.  Another half at $30.  The rest at $300.

In my view, the private ledger one would become the dominant crypto, it most resembles "e-cash", and takes into account fungibility. I suspect in the future, Bitcoins that have been involved with scams wont be taken by vendors, since it's possible for authorities to track the bitcoins via the blockchain, and most scammers mix their bitcoins(So it'd look like the vendors who accept the tainted coins are apart of the scam).