A machine distributor sells two models, basic and deluxe. The following information relates to its master budget. Sales (units) Sales price per unit Variable costs per unit Basic 8,560 Deluxe 2,140 $ 9,400 $ 13,400 $ 7,520 $ 10,050 Actual sales were 7,490 basic models and 3,010 deluxe models. The actual sales prices were the same as the budgeted sales prices for both models. What is the sales activity variance for the basic model?