A good link to get a rough idea on pricing.
VERY rough. Like, what NOT to pay...
Subguns.com - NFA Firearms Ads
and
Sturmgewehr.com - NFA Market Board
are much better barometers, IME.
Cheapest way is to join the Army!
I am also looking to get into the MG business.
I found this Machine Gun Price Guide very useful to have an idea of what different guns are worth and you also see the trends with time.
Cheapest way is to join the Army!
How can you get a license to buy a full auto and what do they cost?
You should read the threads stickied at the top of this sub-forum.