Kogler Corporation's relevant range of activity is 7,000 units to 11,000 units. When it produces and sells 9,000 units, its average costs per unit are as follows:

Average Cost per UnitDirect materials$ 4.85Direct labor$ 4.20Variable manufacturing overhead$ 1.55Fixed manufacturing overhead$ 9.00Fixed selling expense$ 3.15Fixed administrative expense$ 1.80Sales commissions$ 0.50Variable administrative expense$ 0.45

If the selling price is $25.00 per unit, the contribution margin per unit sold is closest to: