The classmate of the landlord is quite funny. The processing fee of gold jewelry is the fee generated in the process of processing gold raw materials into jewelry. Since the finished products sold by the gold shop are finished products, of course, there are labor costs. You can't just buy a pimple and go back.
Now you can go to a shop with on-site processing and process your own gold raw materials into finished products. Then there will be processing fees, and the gold will be a little worn out. . .