Here in the People's Republic of Massachusetts, I was required by my comm insurance co. to register my truck with comm. plates, which I did at the end of November. While at the RMV, the lady asked if I'd like to re-new for the upcoming year, because my brand-new registration runs out Dec.31st. Comm reg renewal would be $161 per year, whereas my regular car reg is $45 every two years.
Along a similar line, the sign company that made my lettering told me that magnetic signage is no longer allowed in Mass., and the company name needs to be 3" tall, and must have a physical address (2" tall) and phone number or web address (2" tall).
So once you decide to get the comm plates, it might start a domino effect. Be prepared.
Chris in Boston