Months ago, Hiroya Oku, author of the hit Sci-Fi manga Gantz tweeted promoting his manga and the manga of his peers. Mangakas (people who write/draw mangas) might rely on royalties from sales of their manga.
“This might shatter some kids’ illusions, but no manga creators can keep producing comics if people are just going to read through them at the store without buying them, or buy them from Yahoo! Auctions or used book stores. Creators just can’t do it. But there are so many adults who get their manga that way, even though they know the situation. If you want to support a manga creator, please buy your manga new, at list price, as often as you can.” Hiroyo writes.
Stressing the part where Hiroyo says, “buy your manga new, as often as you can.” Realistically it can get a bit pricey to constantly pay for manga, however Hiroyo is right when it comes to the financial aspect of being a mangaka. A good place to get a better perspective of being a mangaka would be the anime Bakuman; from the creators of Death Note a manga that focuses on two teens trying to become mangakas. Please buy your manga new when possible.