[HPsquared]

The important part there is the termination characters. "Dollars" / "Pounds only" etc. and the decimal point (though that's easier to turn into a comma and make into thousands... Funnily enough the German way of using comma as the decimal separator avoids this)

[kijin]

Yeah, we've tried null-terminated strings and it wasn't fun. Better use a more explicit, highly visible character.