Which publishing house is the best, and the price is not too expensive?

You can search on major websites. All the books listed on the website have sample pages for reference. You can see if the font size, color and typesetting are to your taste.

The History of the Three Kingdoms, recommended by Tianjin Ancient Books Publishing House. This article is in black font. Zhu Pei followed closely, using a red font smaller than the black font. Easy reference. This set of books is hardcover with a black cover, which looks heavy and steady. Price 50-60 yuan. If you think it's expensive, I recommend the Three Kingdoms of Yuelu Bookstore. 30 yuan can win in his early days.

Warring States Policy, recommended by Jincheng Publishing House. Original text+translation+annotation thread-bound version 16, 4 volumes in total. It is very helpful for a comprehensive understanding of the warring States policy. The price is around 60 yuan.