If they are also in a hurry to get the goods, the problem is simple.
Delay first, as if you are about to pick up but don’t pick up, but make them feel that you will pick up in the end. The purpose is to temporarily stop them from looking for someone else to buy from. After a period of time, they will definitely become anxious and have no time to find anyone else. They can only find you. Now you will have the initiative, and the negotiated price will be more beneficial to you.
But be careful not to let others see it when you are procrastinating, as if you feel it is difficult to handle, pretend that you are pitiful, and you are disadvantageous to both sides, so that you can let them fall into your trap.