Since Obama couldn't get any anti-gun laws passed in 2013 the prices have continued to fall. Almost every firearm company in the USA started making AR type rifles last year then the ban didn't happen. There's a glut of AR's available.
The prices will fall until they get to cost or somewhat lower. Where is that bottom price I don't know.
But it appears Obama has Executive Orders up his sleeve. He stated he would use Executive Orders if Congress doesn't pass what he calls common sense anti-gun laws. There are no new common sense laws that aren't on the books now.
IMHO