The price for the migration is calculated based on the Entity Limit.
The Entity Limit is determined based on the highest entity number among products, customers, and orders. For instance, if your Entity limit is 1000, you can migrate up to 1000 customers, 1000 orders, and 1000 products. Moreover, you can transfer all categories and other supported data types without any additional cost. Thus, if you plan to move 1000 products, the Entity Limit will be set at 1000, and the price will remain the same.