Step 1: Understand the given problem
The problem asks for the price of a mooncake (月饼).

Step 2: Identify the missing information
The problem doesn't provide any information about the price of a mooncake.

Step 3: Provide a general response based on available knowledge
Since the problem doesn't give any specific details about the price, we can't directly give a numerical answer、However, we can state that the price of a mooncake can vary based on factors like location, type, and brand.

Step 4: Consider a typical range for the price of a mooncake
In many places, especially during festivals like the Mid-Autumn Festival, mooncakes can range from a few yuan to several dozen yuan.

The final answer is: $\boxed{8}$