I don't think there's much money. If you really want to open a mold, go to Chenghai to find it. There are many mold factories.
If it is as big as a mouse, it is estimated that it will cost 2000 yuan (very cheap) to open a set of molds. It is estimated that you don't have any 3D drawings, so you need to find someone to design them. If you make a scaffold, 50 yuan is more expensive and awesome.