Audiobooks - OneClickdigital
Brilliance, Audible - these are owned by Amazon and do not sell to libraries.
Pottermore - allowed to purchase HP series as of April 2016. Copies expire after 5 years. This is the only audiobook company with an expiration.
eBooks - 3M Cloud Library
HarperCollins: 26 checkout limit per copy; no time expiration on copies
Penguin Random House: Inflated price (up to $65 for new release);no checkout limit or expiration of copies
Scholastic: Copies expire 2 years after purchase (regardless of checkouts)
Disney: 26 checkout limit per copy; no time expiration.
Simon & Schuster: Copies expire 1 year after purchase (regardless of number of checkouts); libraries required to enroll in "buy it now" options on platform.
Macmillan: copies expire after 52 checkouts or 2 years, whichever comes first, plus high price per copy (usually $60-$40).
Not Available to Purchase
- Hachette (not available to consortia)