Not to butt in, but on M. R. James:
For those who don't mind paying $10 for an e-book, Ash-Tree Press' e-book edition of
A Pleasing Terror: The Complete Supernatural Writings is the one to get. All four collections of ghost stories, the uncollected ghost stories,
The Five Jars, the incomplete drafts of ghost stories he never finished, and his essays and articles on supernatural fiction, all annotated by the great James scholar Michael Cox and other experts. Plus some other odds and ends by and about James. The only drawback is that the e-book doesn't include the illustrations from the print edition. But since the print edition is long out of print and costs hundreds of dollars secondhand, the e-book is really a bargain even at $10.
A Pleasing Terror is available for
Kindle, or
direct from the publisher in EPUB and PRC.
If you're a bargain-hunter, $3.49 for the Wordsworth Editions release of James'
Collected Ghost Stories on
Kindle is a good deal, and it looks like a decent version, though I note one of the Amazon reviews complains of no table of contents. It's missing a couple minor stories by James, the fragments, and
The Five Jars, but unless you're a completist they're no great loss.
Curious Warnings: The Great Ghost Stories of M. R. James has all the fiction including
The Five Jars, but at $11.29 on
Kindle it's even more pricey than
A Pleasing Terror, without notes, and (this is a deal-breaker for me) the editor has broken up James' ridiculously long paragraphs into ridiculously short ones, under the debatable impression that this will make the stories more accessible to modern readers.