>>2170498I bought my LN all from Amazon just because it's convenient to get it all shipped as one. I tried looking at like Barnes n Noble and eBay to compare prices but ultimately saving $10 wasn't worth it to split the order between multiple websites. Especially when shipping and tax start adding on. Prices can differ by $2 or so between sites but it generally averages out. As for my manga I bought that off eBay from some guy who apparently works at a book store and lists their merch online. It's nice opening one box and all 16 books are just right there. You can save money by buying used books on Amazon as they're usually like 1/5 the price but you can't be sure of damage. You might also be able to get a local library to order all the books for you. Should be fairly easy to convince them of the quality of the series if they need a reason to stock it on shelves.