The closest I could find that met your requirements is a Beeman R9 in the package is ~$600
Other available rifles are more expensive, too fast, or don't have a lifetime warranty or accuracy of the Beeman.
"Camping places fix themselves in your mind as if you had spent long periods of your life in them. You will remember a curve of your wagon track in the grass of the plain like the features of a friend." Isak Dinesen