A publisher believes that processing costs have increased by 10% to 12% in the past five years; raw material costs have increased by 10% to 13%; sales and advertising costs have increased by more than 10%  Adding all these together, the total cost has risen by at least 30%  This is only for large publishing houses  If it is a small publishing house, the total cost has risen by at least 40%  It can be seen that the increase in book prices is mainly caused by the increase in costs
Other reasons that led to the increase in book prices are ingored.
 So I am opposed to increasing the copyright income of writers