Final answer:
The fee for emergency services during off-hours for an FSA (Flexible Spending Account) customer depends on the company's specific policy and the services needed. To obtain accurate information, the provider's pricing guidelines should be consulted.
Step-by-step explanation:
The fee for emergency service between 10pm and 6am for an FSA customer can vary depending on the company's policy or the services needed.
Unless this information is provided in the context of the question, a standard fee cannot be assumed. Typically, businesses offering after-hours emergency services charge a premium due to the inconvenience and additional resources required to fulfill requests during off-hours. It's important to consult the specific FSA provider's terms of service or pricing guidelines for the most accurate information.