I would need to see it for real - but I would guess around £100.
I would say start between .50c to 1.00 a square inch plus materials. Gh quality paper isn't cheap. Without seeing it and knowing what you paid for materials I'd estimate between 100-150 dollars.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.