If they are talking about a full auto machine gun ban, well how many of those are in Mass to begin with? When you factor in the $200 FFL-3 license and the cost of the gun (since none have been made for the civilian market since 1986) you’re going to be paying 15 - 16 grand.
Me-thinks they are talking about banning semi-autos....
Some of what you say is indeed correct, however the $200 dollars is for a tax stamp not a class 3. You don’t need a license for a machine gun. Full auto can be had for under $4000 dollars. See http://www.subguns.com/classifieds/index.cgi?db=nfafirearms&website=&language=&session_key=&search_and_display_db_button=on&results_format=long&db_id=16960&query=retrieval