I start this thread with some trepidation. I have never seen anything about this topic in this subforum. I'm sure, though, that someone will let me know if they don't want it here.
As the title of the thread says, it's about getting
free ebooks by being a reviewer. Even if you've never seen any information about becoming one, you're certainly familiar with the concept if you've ever read at least a few reviews at, say, Amazon.com. The reviewer will say something at the end (I understand that it's required by law) to the effect of, "I received an advance copy of this book free in exchange for my honest opinion," or something like that.
In this post, I'm going to mention Rose Publishing's reviewer program. It looks like everything that you need to know about it is
here, on this webpage. One nice aspect of their program (which may be true of lots of companies' reviewer programs, I don't know), is that if you don't want to sign up for the Rose Reviewer Program, but still want to review a particular product and get it free, you can email Rose and they will consider letting you review that one product.
Exchange a little bit of your time, to save a little bit of your money. Like my former-step-first-cousin-by-marriage says, "money is time, and time is money."