Is there a consignment fee for air tickets below 40% discount now?

Not necessarily, it depends on the airline. There are instructions on baggage check-in on the website where you book the ticket, such as Air China, China Southern Airlines, etc., and the 30% off fare can also be checked. For example, Spring Airlines, etc., when booking a ticket, there will be different prices for no baggage and baggage fees. You can book tickets according to your needs.

What I understand is that there is no need! ! ! !