Hey! Im an Adv OW diver and Im interested in becoming an instructor next year. Does anyone know what are the cheapest and/or best countries for this course? I heard Thailand was good value... and Vietnam too - any advice?? Thanks

I think you just need to shop around, I have seen some do reduced prices or even for free as part of an internship. My local UK dive center will do DM for free.. You have to look at where you want and can spend the time you will need to qualify too.

Some of the cheapest diving I have found has been on the red sea (egypt), may be worth looking into too.