They do guarantee their services. From their website, posted on April 12, 2016:
https://www.■■■■■■■■■■■■/the-ivy-coach-blog/college-admissions/the-million-dollar-guarantee/
“There we go again. We hear you thinking it. And, yes, we saw that eye roll too. Whatever. We are not ashamed to command one million dollars to help earn your child admission to his or her dream school. In fact, we’re quite proud we can command such a fee. Indeed for one million dollars, we will guarantee that with our help at Ivy Coach your child will earn admission to his or her top choice university — or you will receive every single one of your green dollars back. So what we’re guaranteeing is that we will do everything we can to get your child into his or her top choice college and if we do not succeed, all of our help cost you nothing. And if we do succeed, your bank account is less one million dollars but you have one happy child on your hands. Side note: In our years of offering this guarantee, we’ve never had to issue one refund. You do the math…”