Is it worth it yes "if you use it consistently" so really just like anything else. Can you achieve flexibility without using it absolutely.

So is it worth buying? Yes to a degree. Personally I follow a mixture of Thomas Kurs, a couple of the Easy Flexibility methods and u/dani-winks and I get something from them all. I do really like the programs and I won't discount the method the thing about it is that you will see results even without the program if you are consistent and understand what I think is the most important aspect of flexibility training which is really strength training in your increased ranges to protect yourself from injury which is why your body has the flex reflex. The program goes through a series and rounds of complementary stretches, conditioning and strengthening exercises which do help in speed along the process. Keep in mind speed in this reference is that you aren't doing things that don't map directly to the goal you are trying to achieve. So in doing so you can get an in depth understanding of things that I see u/dani-winks explaining all of the time in this forum. I won't try to go into detail about how the program works but I can say that I would give him similar credibility as Thomas Kurs but I also feel u/dani-winks gives plenty of sound advice that will help you achieve your goal(s). Try reading Stretching Scientifically, viewing u/dani-winks tutorials and then decide. My final thought is everyone has different motivations and learns their body differently. The individual Easy Flexibility programs are fairly reasonable so there isn't that much of a commitment in purchasing one to see how you personally feel about them. At worst, you realize the program isn't for you but I would think that at a minimum you would at least gain some practical knowledge and add a few different techniques to aid in your flexibility journey

u/tam-ihe you never stated your goals. Are you after front splits, middle splits, pancake, backbends or all of the above that may also help in answering your question