Actually..I got a friend who made the molds for the DOA lures down in Florida.He also has a do it yourself plastic lure kit that uses a two part fast setting plastic called Alumilite.So far he only has two molds available with the kit.Ones a bottle popper and the other is a small pencil popper-like lure.Here's a pic of the kit.It comes with the molds,Two part plastic stuff(It's pretty freaky stuff) mixing cups, stirrers, and a video on how to make the lures.I have no idea how much they are but I could ask.His biggest problem is trying to market it.
The molds pictured here are the pencil popper thing.Even though he makes the molds at his factory they are still very expensive to make.
Once you have the master though duplicates are cheap.
Soory can't get the pic to come up don't know why.Don't think it's too big.