I love this country because it's my home. That being said the USA is the land where money talks and BS walks. Semi-auto AKs run between $300.00 to $1,300.00 depending who makes them. Full-auto usually cost civilians 10 times what their semi-auto counter parts cost.
Example:
The US Government pays around $900.00 for a H&K MP5 which probably translates to $1,200.00 cost for military and LE.
Civilian's cost for a H&K MP5 is around $15,000.00 plus Tax stamps and waiting around for the ATF to get done dragging their rears with paperwork.