Definitely not worth that much especially if you're just looking for a plinker. A standard 10/22 is $200, Boyds stock is $100, a drop in Timney trigger is $150 and a bull barrel is $100 and up. The scope on it is probably just a generic scope if it came on the gun from Ruger.
Now if your're looking to start collecting guns it might make a nice piece, but still not worth that much IMO.
What year was the rifle released? This will help determine how much its worth too.