Great price for a solid AR. Have one and love it, shoots great, zero issues.
Ditto. I paid $540-ish and thought it was a good deal. Have had no issues whatsoever shooting steel cased Barnaul and it's more accurate than I am.
I really don't know how much lower AR prices will drop. I've read that it's already reached the bottom and others that say prices will continue to fall. I'm totally happy with mine at $100 more, so even if they drop a little more, you can't go wrong.
To throw a little support towards Ruger, I bought a 10/22 takedown from them and about a week after I got it home and before I even shot it, the front iron sight fell out of the dovetail (common problem). I called them and they asked for the serial number and my address and sent a brand new barrel with the sight on there securely (in a week) and let me keep the old barrel. No muss; no fuss. That was customer service!