Are the works of Zhang Junhui calligraphers valuable?

It's worthless Zhang Junhui's hobbies are calligraphy, poetry and couplets. In the late 1970s, he worked in regular script and then in seal script in Deng. Calligraphy works won county and city awards, and engaged in folk ceremonies for weddings and funerals after retirement. His works have no collection value. Zhang Junhui, male, born in June, 1944, from Baishi Town, Xiangtan, Hunan.