A huge range. A high quality instrument could cost as much as $10,000. A decent trumpet suitable for a student might be found new for as little as $250 (be very wary of any new trumpet that costs less) or used for as little as $150 or so.
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.