Mane Street normally sells 2,000 economy-size bottles of shampoo for $11 per bottle. The cost to manufacture the shampoo is $4 per bottle. Further variable processing costs of $1.2 per bottle for the shampoo would convert it into a shampoo-condtioner, which Mane Street could sell for $18 per bottle. Variable selling costs are $0.6 per bottle for the shampoo, but for the shampoo-conditioner they would be $2.4 per unit.

Calculate and enter the amount of minimum selling price per bottle that would provide incentives for Mane Street to process further.

Answer: