Well, top of my "I paid actual $ for it, I ought to go and read it at some point, but not now" quasi-list are:
- a few dozen Poisoned Pen Press mysteries (I've read 15 out of 40-ish from the prior monthly 99 cent introductory deals, and I think 10 out of the 40+ current further-in-series discount sale follow-ups, IIRC)
- the entirety of that Dreamspinner Press m/m romance time-travel-themed monthly short story bundle which I got for the cracktastic-sounding trusty hedgehog companion tale (I've read 2 out of 31 thus far, and no, the hedgehog one was neither)
- my 132+ Prologue Books assorted vintage pulp crime picked up during the 99 cent sale at Amazon (haven't even gotten more than half-way through the original freebie, though to be fair I abandoned pretty much everything I left unfinished on my Kindle once I got the Sony)
- (not yet, but soon) 40+ Georgette Heyer novels from this year and last's anniversary sale (I read all 7 paid mysteries last year, but still haven't touched the 5 historicals I picked up, and intend to buy all the romances I skipped last year)
- several latest-in-series new releases of stuff I actually like and want to get to, but just haven't gotten around to yet (some in paper)
- a bunch of single-author old-school reprint sci-fi bundles from Baen and Phoenix Pick Press (I did finally read the novels in the Heinlein one which I've owned for, um, well over a year now without touching even though it was my first deliberate purchase at Baen and I've read a couple of things from the Pohl bundle; still haven't read anything besides the initial freebie from the Paul Cook bundle, but I got the contents of that dirt cheap)