Is the privacy thing any worse than when you purchase a book on-line? They have your name, address, credit card number.
I have absolutely no publishing experience. I do read a lot and have two different e readers. I have also downloaded quite a few books by independent authors, so for what it is worth (and my apologies if this is all common information, just thought I would offer a frequent reader's perspective):
What you see a lot is that an author offers one of their books free or really cheap. Then, they hope you come back and purchase more of their work, or better yet, the next in a series. Some authors try to "trick" people, by listing their book as free or really cheap, but it is just the first chapter or two. I would not recommend doing that in a "sneaky way"..because people get annoyed, and give your book a bad rating, and many people may not take the time to read why you got the bad rating, they just might see a low number of "stars" move on to the next selection. If you want to do that out in the open, that is fine, though I personally would be less likely to download that as opposed to a full work.
The artwork is normally pretty bad on independent books.. I have seen author's on their blogs talk about how it costs a lot of money for a good cover and it does make a difference. For me, personally, I really could not care less about the artwork. For one thing, I am reading it as an e book, and two, I am not buying it for the picture. The summary of the book is what gets me, or fails to get me.
The editing is all over the place. Some people, who thank friends for editing, have very professional looking work product. Other people, who apparently paid for editing services, did not get their money's worth, IMHO.
Final thought, if I discover a author I like, cheap or free, the first thing I am going to do is do a search for them on-line, and the topic I am interested in, to try find more work at the best price. I am sure others do this, so if you have a book you want people to buy, but the same work is out there on sites like this for free, that may impact your sales.
Again, my apologies if this is all obvious!
Some of the work here is really, really good, so best of luck to anyone here that self publishes!
