If it happens, it happens. :D

It's already happened in Australia and has been here for quite some time. The $1 coin was introduced in 1984 and the $2 coin in 1988 for our bi-centenary. The $1 and $2 coins are considered "loose change" and are annoying. I think most find their way into change jars and kids money boxes. We also no longer have 1 and 2 cent coins either. They were withdrawn around 1990-1. So most prices either end in a 0 or a 5.

I'm not going to pretend that things didn't change here coz they did. The prices did go up. :D A cup of coffee used to average around $1.50 to $2.50 depending on where you went. The same cup of coffee is now around $3.50 to $5.00.

Sure inflation and the CPI is a factor compared to prices nowadays. What would've happened tho, if our dollar was still paper? Not sure but I reckon our demand for $5 bills has increased. I don't have the circulation figures on it but I see more $5 notes now than I used to when we still had $1 and $2 notes.