First, that's a little high.
You can order these from FAC (Guns-N-Stuff) in L1A1 config for $427 (Hesse receiver, I think) and in STG58 config (IMBEL) for $549.
Now, as to the quality. You are going to get three responses.
1/3 of people are the Centruy Arms haters that tell you anything they make is junk. These people will tell you to get a DSA.
1/3 of people will tell you that sometimes they assemble a decent rifle, sometimes they make crap. So it's a crap shoot as to what you might get. They do have a reputation for some rifles not working out of the box. These people will tell you to take your chances, or get a DSA and be sure.
1/3 of people will tell you about their great experience with their Century purchase, and how happy they are to get a great rifle at a great price.
So... where do I fit in? Somewhere in the middle. I have "had" to work on both Century rifles I own.
I have a Century FAL, STG58. I LOVE it. However, after reading about how bad the gas pistons are from Centruy, I decided to go ahead and install a DSA gas piston for $35. I dont know if mine would have bent over time, but I figured for $35 why chance it. I also replaced the fire control components with FSE ($50) but I really dont think thats necessary...
So, if price is your main concern, and you dont mind adding $35 to the cost replacing the gas piston, then I say go for it. (plan for ~$600 total)
However, if you want a pristine rifle, with a better finish, that will function right out of the box very well, then go with DSArms. You will pay for it tho. ($800 to $1000) FAC also sells these for $800.
Here's mine:
[img]http://wsphotofews.excite.com/022/ka/gF/Qn/Aw92896.jpg[/img]