Arrow, Incorporated, manufactures two products that it sells to the same market. Excerpted below are its budgeted and actual operating results for the year just completed: Budget Actual 22,800 83,000 38,000 74,000 Unit sales Product x Product Y Unit contribution margin Product X Product Y Unit selling price Product X Product Y $ 4.80 $ 16.00 $ 4.20 $ 13.00 $ 16.00 $ 20.00 $ 13.00 $ 30.00 Industry volume was estimated to be 1,883,000 units at the time the budget was prepared. Actual industry volume for the period was 2,480,000 units. Arrow measures variances using contribution margin. The total contribution margin sales volume variance of the period is