CWB Inc. has two divisions: the vehicle division and the battery division. The vehicle division intends to negotiate with the battery division for an internal transfer price of a customized battery. The regular battery that the battery division normally sells has a variable cost of $12.00. Yet the vehicle division needs to purchase 20,000 customized batteries, which increases the variable cost by $3.45 due to additional processes. In addition, the battery division does not have sufficient idle capacity to fulfill all the demand and would have to sacrifice the production and sale of 3,000 regular batteries to outside buyers. The market price is $28 for the regular battery and $35 for the customized battery. What is the minimum acceptable transfer price of the customized battery for the battery division? (Round your final answer to two decimal places)