Is Wang's calligraphy valuable?

Wang's calligraphy works have won many awards and have been collected by many museums. When Hongkong returned to China, he created a 300-meter calligraphy scroll and donated it to Zhejiang Museum. His handwritten book How Steel was Tempered was collected by the Russian National Museum, so it was called "Pavel Colta Gold" in Hangzhou. This pen has become a bright light in his life. His works are not very expensive, and they are collectible!