Where can I buy a better inkstone in Shanghai?

Duoyunxuan in Shanghai is good but the price is high.

Now there is an online mall called Calligraphy Jianghu Mall. The shops inside are all registered by the state.

Moreover, the price is half lower than that on the market. The high-grade inkstone is mainly for students, and the price of inkstone ranges from 10,000 yuan to tens of yuan.

There is also a shop in Shanghai called Boyintang, which has high taste and natural high price.