Jig cost is determined by a few things and I will try to outline this for you:

Distribution: Any consumer product, doesn't matter if its Jigs or Jaguars or Tupperware, has a price structure that works like this.

Manufacturer pays $X landed cost for a product - that is the cost to manufacturer it and get it to its destination country.
Then the manufacturer adds their profit margin - which is normally small and based on doing a large volume.
Then there are...

Sea Draggin