I am a certified TEFL/TESL instructor with over a decade of work experience in teaching English at the university level. Last summer (2016), I wanted to travel and teach for a few years and found TEFL Heaven's ads all over the common ESL boards so contacted TEFL Heaven. Despite having a MATESOL, a 200-hr certificate (pre-MATESOL), and a decade of teaching experience, I was told by TEFL Heaven's representatives that I'd nonetheless have to pay for and complete their specific TEFL certificate in order to be placed with their programs in various countries. That effectively rules out TEFL Heaven for experienced language instructors as it would be redundant to add their certificate to an already internationally recognized certificate and accredited university TESOL/TEFL degree.

I don't mean to disparage TEFL Heaven, but they advertise their services on job boards, not academic programs for sale boards. And that strikes me as extremely disingenuous, especially given the number of already certified English language instructors visiting job boards. A legitimate certificate program ought to advertise itself as such, perhaps emphasizing that upon graduation students are eligible for the program's placement services.

If you already have a TEFL certificate, you can find very many excellent placement services all over the web that don't charge you for placement, and you may already be entitled to these services with the school that awarded you your certificate. I'm very wary of any kind of duplicity in dealing with companies that stand to gain so much financially (large incentive to obscure the truth). Also, consider doing a search online for recent TEFL graduates' (2010 onwards) experiences. As more and more expensive college degree graduates in the US and abroad are finding competition for work in our own countries extremely tight, the TEFL market abroad is being flooded with graduates and career changers, devaluing the TEFL certificate, as evidenced by consistently falling TEFL compensation packages and increasing credential demands. You'll notice TEFL schools downplay this if they mention it at all. Caveat emptor.

Good luck to you.