I did Hollins in summer 2011. It works. I saw immediate results. Then a little drop off, but 6 months later I was speaking with almost complete conversational fluency. It’s hard. It’s intense. You’re signing up for a lifestyle change and committing yourself to months of practice after the program too. However, they flood you with resources and really commit to helping you well after your 12 days are up. It’s worth the money in my opinion. It changed my life. Happy to talk more about it if you need. 9 years on and I know people in my life that never knew I stuttered.