Depends on the quantities involved.
For plastic cases (A1200, etc) a special tool has to be made for the injection moulding process.
The cost of a tool for a complex shape like that would be something like US$20,000.
The case has two halves (not including trapdoor), so add another US$20,000 for a 2nd tool.
Plastic material required for each case is only a few $.
You do the maths and divide number of cases produced with the profit from selling each case and find out how long before you recover your tooling costs.
