The cost of taking a postgraduate exam varies depending on the type of exam you are taking. Generally speaking, the cost of taking a postgraduate exam in English is around 1000-2000 yuan. This cost includes the registration fee, the exam fee, and the cost of materials such as textbooks and study guides.

In addition to the exam fee, you may also need to pay for additional materials such as textbooks, study guides, and other resources. The cost of these materials can vary greatly depending on the type of exam you are taking and the resources you need.

Finally, you may also need to pay for travel and accommodation costs if you are taking the exam in a different city or country. These costs can vary depending on the distance you need to travel and the type of accommodation you choose.

In conclusion, the cost of taking a postgraduate exam in English can vary depending on the type of exam you are taking and the resources you need. However, the cost is generally around 1000-2000 yuan.