Undergraduate liberal arts.

This way of writing is probably 100- 130 yuan, which is not difficult. Many non-professionals can do it, and a 5000-word paper can be done for a few hundred yuan.

Undergraduate science and engineering.

Science and engineering is more difficult, and only people in this major can do it. Moreover, the writing style is complex and requires a lot of design, so the price of this piece is relatively high, thousands of words 180-230 yuan, and programs such as drawing and modeling need to be designed.