[sufue]

Now $2.99 at Kindle US as part of the Daily Deal today. @jselby's link below is still good.

Originally Posted by jselby

George Orwell's 1984 & Animal Farm in one volume is available at amazon.com for $4.99.

https://smile.amazon.com/Animal-Farm.../dp/B003ZX868W

And also on sale at Kobo US: https://www.kobo.com/us/en/ebook/animal-farm-and-1984

Or, if you prefer, you can get 1984 alone for the same price, also as part of the Daily Deal.
Kindle US: https://www.amazon.com/dp/B003JTHWKU/
Kobo US: https://www.kobo.com/us/en/ebook/bHPIUc5dhkmjKwMJhoNbhA

Both are Houghton Mifflin Harcourt, so presumably legit.