There are many goals

The target audience of supplementary books is students and teachers, and the demand is relatively large. Every year, freshmen need to buy supplementary books, so the market is relatively stable.

Small market competition

The market of supplementary books is relatively small, and the market competition is not as fierce as popular novels and other bestsellers, so publishers can easily grasp the market share.

Copyright fees are relatively low.

The authors of supplementary books are mostly teachers or scholars. Compared with well-known writers who sell novels and other works, the copyright fees of the authors of supplementary books are relatively low.

The price is higher.

The price of supplementary books is higher than other books, and the price of a supplementary book can be equivalent to the sum of the prices of several ordinary books, so the profit of the publishing house is relatively high.