For those who enjoy Star Trek novels or wish to start, Simon and Schuster puts a selection of them on sale every month for $.99. It's usually a mixed bag from all the various series but at $.99 a piece you can't go wrong. Last Best Hope has gone on sale twice now. And while it says US only, I'm in Canada and these deals appear on the Canadian sites as well.
https://www.simonandschuster.com/startrekbooks (click the banner "ebook deals", I'd link to it but they change every month)