I don’t see the Lovejoy books, by Jonathan Gash, go on sale very often. In fact, I don’t see most of them in e-book at all right now, although I have about a third of the series from several years ago – like 2020 and earlier.
However, The Ten Word Game, which is the next to last in the series, is both available and on sale ($2.99) in the US at the moment. If you haven’t read the series (which is really quite fun) and want to stick with e-books, I’m not sure I’d start it now, since only the last couple seem to be available in that format. So why start something you won’t have many titles available in? But hopefully some e-publisher manages to pick them up again. And Lovejoy really is a treat!
Oh, and it’s discountable at Kobo US, if you’re a VIP, or have a coupon code…