I recently finished a 200 hour TEFL course (20 hours classroom component, which I believe aren't currently running through the pandemic, 180 hours online study) through i-to-i. They are a legitimate, reputable company and came well-recommended. I found the course contents extremely interesting and well thought out, especially the classroom component, which is a must if you want to pursue a TEFL career. Having no prior experience with teaching, I came out with a lot of information and the motivation to learn more. I will echo some of the suggestions that the material presented throughout the online components were a little unprofessional. The assignments you were expected to do were honestly very monotonous and was probably the weakest element of the course. I was failed on one occasion for not fulfilling a single target that had been worded so vaguely I had absolutely no idea what I was expected to do. Fortunately, I was assisted by one of i-to-i's extremely helpful on-call teachers, who were incredibly professional and are honestly a credit to the program. I was able to finish the course within the time limit without paying any extra fees. I have no regrets in choosing to study with i-to-i, though I would urge you to do some independent research before making your decision, particularly if you do not have a bachelors degree (as there was a lot of outdated information thrown around—it's becoming more difficult to teach ESL abroad if you don't have a bachelors degree, and I believe this was played down to some extent throughout the course). However, their courses are well priced, their staff are incredibly professional and courteous, and overall it was a very positive experience.