Rip Rap sizes: R-3       $15.45/ton              (3" - 6") R-4       $16.75                    (6" - 12") R-5       $16.75                    (9" - 18") R-6       $18.25                    (12" - 24") R-7       $18.25                    (15" - 30") R-8       $21.75                    (24" to 48")