They're definitely more expensive than I was hoping for. Time to start saving up I guess.
Should be able to get a decent used one for $500. I avoid them only because finding pre-ban mags is too hard. Also based on my research they can't hit anything but if you shoot in the general direction of the bad guys their jeeps will drive off the road and flip (don't worry, everyone will be ok).
There are plenty of more politically correct American made semi autos you may want to consider including:
M1 Garand
M1 Carbine (post war civilian models are cheaper)
M1A (pricey)
You may also consider a 9mm carbine if want something cheap to buy and feed.
For the record, I have no idea what the laws are in Boston.