Academic textbooks can easily be $50 each, or even more. They are expensive to create, and generally have quite a short shelf life. The publishers know that a new edition will come around sooner or later, and they want to make their profit before that happens.
At that point the price will drop from $50 to $10 (or whatever), but that will not benefit any student because the professors will then move to teaching the new edition. If you assume that you do, say, ten courses in a year, and buy a couple of books for each course, that's $1,000 spent on books alone. You also need stationery, possibly equipment and lab gear, etc., there will be photocopying costs and what-not.
You may only spend $1.5k, then again you may spend $2.5k, so the $2k figure isn't necessarily accurate, but the university is basically telling you to allocate money for that, not that it then comes as a nasty surprise to you.
You can likely get your course books cheaper by searching for them online, from sellers such as Amazon. Some Universities allow you to rent books at a reduced rate. When I was a University student, my book costs were usually between $150- $400 per semester, depending on the age of the book, if it was a textbook or monograph, it's condition, and whether it was a new edition.
One semester we students in an upper-level history topics course had to share a certain book because we couldn't find enough books to go around. University course books almost always cost more. That's not including the money you pay to print material in the library or whether you buy your own computer and printer and printer supplies, notebooks, pens, pencils, blue books, calculators, or other course gadgets.
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.