How do part-time copywriters and planners calculate their wages?

Part-time jobs basically have workload requirements, and the workload that meets the requirements is converted into wages.

Copywriting is basically based on word count. Of course, poor writing will not be counted.

The same is true for planning. A good planning project is valuable. The specific amount of money is related to both supply and demand. There is no fixed price list.

You can practice with several more and compare them! Be sure to find a reliable one, and be careful to keep various evidence of the agreement to avoid breach of contract in the future!