First, a disclaimer: I don't like most works of fiction; therefore I know almost nothing about them (except what I was force-fed in high school and college. Grrrrr!).
But I thought that I would pass this along to you, and let you be the judges:
eBook Special! Hundreds of Literature Titles only 79¢ - Limited Time!
Dover Thrift Editions always offer the lowest price — and now they are even more affordable. We've slashed the prices on eBooks for dozens of our very best titles, so you can enjoy classic works by Shakespeare, Twain, Joyce, Dickens, Austen, and other masters for just 79¢ each. Order now, these outstanding savings won't last long.
Well, "slashed" might be . . . how shall I say this diplomatically . . . possibly overstating the case a bit. It looks like all of the volumes may be ordinarily 99 cents each. But the ones that I noted are all regularly 99 cents each, so you get 20% off. That's nothing to sneeze at.
There are exactly 329 of these ebooks on sale, if I counted correctly (that may be Dover's entire catalog of their Thrift Editions, I dunno).
Yes, it looks like many, if not all, of the ebooks, are available for free from a number of vendors, including Amazon. But, these Dover Thrift Editions have prettier covers.

And, there might be other advantages; I just don't know.
The downside is that if you purchase the book from, say, Amazon, instead of Dover you might be able to buy audio narration to many of these ebooks, and that probably rather cheaply. But I spot-checked, and Amazon does not offer Audible narration on all of the titles, to say the least.
The linky.