As for research means, I can see buying procy books for doing so, not to be trendy or edgy however. So authors, when you write, what do you ask as a price per page? Also, as a magic student, should you acquire as much knowledge as possible, even if it means not eating by buying a pricy book?
Price of the books is something that really bothered me in the moment I found Ekortu's books in Miskantonic Bookstore for about 400 dollars. Similar price on E-bay, then I found that Ixaxxar, the publisher themselves sell them for 50 eur, about 70 dollars(?). How the heck publisher sells for 70, while in USA the store sells them for 400 and more? They overprice a lot I think. So it's not always about starving to get the book you want, but to dig through the internet to find the cheapest price and persist long enough to beat the search engines to submit and give it to you. Ixaxxar didn't show in the Google results until I specifically looked for it. Not to mention that royalties for the author are not going up when book is moving to vendor who raises the price. So pricy book does not mean rich author.
50 eur is rather pricy book for me, but handmade book is something that is not cheap, the materials, time... I know, I bind my own books too, on occasions. So it's rather reasonable. Too much is however too much and it is only the more reason for seeking through online libraries to get book for free, because not even with your best you cannot buy it.
Also, when considering if I should buy a book that costs so much... there is a lot of ther info online for free or in reasonably priced books that you might possibly collect from other sources all knowledge from that book possibly even without ever seeing it.
As an author I really get small percent... but I also buy some books from the publisher for basic price and then sell them for selling price to get little more from them. Signed books right from the author are after all interesting goods of trade.