Is it credible to sell more than 200 guqin with an original price of more than 4000 yuan on idle fish because of the closure of the musical instrument store?

According to the information you provided, it is difficult to judge whether the guqin sold on idle fish is credible. However, here are some reference factors to help you make a decision:

1. seller's reputation: in idle fish, the seller's reputation has a great influence on the security of the transaction. You can know the seller's reputation by looking at the seller's transaction records, comments and feedback.

2. Product Description: Read the product description carefully to get the key information such as the model, brand and status of Guqin. If the description is unclear or in doubt, you need to buy carefully.

3. Transaction method: On idle fish, you can choose online payment and offline transaction. If you choose offline trading, you need to ensure the security of the transaction, such as trading in public places and ensuring that there is a third party witness.

4. Price: If the price is too low, there may be fraud risks. You can compare the price with guqin. If the price is obviously lower than the market price, you need to buy it carefully.

In short, if you decide to buy Guqin, it is recommended to choose a reputable seller, read the product description carefully, and choose the appropriate trading method to ensure the reasonable price. At the same time, it is suggested to communicate with the seller before buying, learn more about Guqin, and ask the seller to provide more pictures or videos to increase the credibility of the purchase.