As with a lot of manga sales, this also includes light novels. Good time to pick up source material of some upcoming/currently-airing anime. This doesn’t seem to include pre-orders in general, but a friend of mine found some that are on sale. Ends January 14, 2019.
Free shipping if you order today (Friday), too.
Some titles on sale:
My Hero Academia
Attack on Titan
One Punch Man
JoJo’s Bizarre Adventure
Promised Neverland
Boogiepop
https://www.barnesandno