No one walks around talking about kilo-dollars ...
Nonsense. 'How much is that house, Mr. Realtor?' "Two-Hundred and Fifty K" 'Quarter-Mil? Cool'.
or deci-dollars
True, although 'centi-dollars' is so common that we abbreviate it to 'cents'.
People are willing to talk "cents" and "kilos" and would likely do "decis" and "micros". It's when the prefixes stay attached to the base unit ("kilo-dollars") that people start changing it up.