Actually, it's not bad to see him separately. It can probably be understood that, first of all, the old gold jewelry needs to be washed again after being recycled by the manufacturer, so there will be depreciation charges inside. When you buy a new necklace, no matter whether you trade in the old one or not, you have to charge a manual fee. The manual fee depends on the difficulty of your necklace style. If the style is complicated, the manual cost is higher. I hope I can help you, thank you