Please help me solve this general accounting problem with the correct financial process.

Henderson manufacturing produces a single product: high-security safes for small businesses. The budget going into the current year anticipated a selling price of $80 per unit. Due to market conditions, the company had to reduce the selling price by 15% during the year. Budgeted variable costs per unit are $50, and budgeted total fixed costs are $200,000 for the year. The anticipated sales volume for the year was 10,000 units, but actual sales volume was 8% lower than budget. What was the sales price variance for the year