At present, the Compendium of Materia Medica, the price of which is lower than 100, is basically incomplete. So buying Compendium of Materia Medica is a matter of different opinions. If it is to be complete, I personally recommend Jinling's Compendium of Materia Medica, but the price is relatively high and the professionalism is relatively strong. As for other versions, such as Compendium of Materia Medica or Selected Compendium of Materia Medica, which are easier to understand, please follow your personal preference. I wonder if you had a complete map of Chinese herbal medicines, which one would you choose? If it is "Atlas of Chinese Herbal Medicine", it is still possible, and the medicinal materials and pictures in it are more practical; However, I haven't seen the Complete Works of Chinese Herbal Medicine, which is probably professional.
If it is not a professional need, but a daily popular science, common Chinese herbal medicine color picture books, illustrated Chinese herbal medicines, practical Chinese herbal medicines and other books are more popular in price and content, which can be used as a reference for selection.
The above are only personal opinions, please choose carefully according to your own situation.