A lawn mowing service originally budgeted for 100 lawns to be mowed each month and estimated $20 in labor costs for each lawn. Because of an unusually warm and rainy spring, they updated their expectations to 125 lawns for the June flexible budget. They actually mowed 125 lawns during June and spent $2,750 on actual labor costs in June. Based on this information, how much was the spending variance for labor expense in June?