You can try Baile 78G pen, and you can buy M-shaped nib without going to 40 yuan.
Gold pen buys hero 100, 14K gold, online 130 yuan. Most of them are fake. Good elasticity, suitable for writing calligraphy.
You can also buy Hero 339, a calligraphy pen with a curved tip. It's not easy to get started, but it's easy to use after practice.
A pen with more than 400 yuan is unreliable, and buying a Parker or something is not enough. It is not recommended to use foreign pens, because foreign pens are thick, slippery and hard, and writing English is very comfortable, so writing Chinese is not necessary at all.
"It takes a hundred days to write a word", and it is most important to insist on writing, but it is not very important to use what pen. Of course, Xinyi's golden pen also contributes to the progress of calligraphy.