Teavee Corp manufactures rocking horses. The cost of producing the rocking horses at the company's current activity level of 6,000 units per month is: Variable manufacturing costs per unit Fixed manufacturing costs per unit $10 $8 The normal selling price is $65 per horse. The company's total productive capacity is 7,000 units per month. Teavee Corp has received an offer from an overseas customer for 1,000 units at $60 per unit. Compute the total differential income from accepting the special order.