Agreed. Though we do sometimes write $5M, which is functionally equivalent. I've noticed in internet communication, it's common to say a numeral before the dollar sign. For example, "You're going to end up spending 100$ on that".
In this case it is, but it isn't in others (like kUSD or G$).
Oh, I always thought that you write a numeral before the dollar sign... Thanks for pointing that out. It differs between currencies - for example, british pounds are written before numeral (£42), but polish złoty are written after (42zł).
