It also seems expensive to me, for a TESOL. You can pick up TEFL qualifications a lot cheaper than that
Select Your Online TEFL Course
But if that's the sort of money you want to pay, then you should consider doing a CELTA.
CELTA, TESOL TEFL, TESL and CELTYL Certification & Certificate Courses for EFL ESL Teachers. Teach English abroad or overseas at ECC (Thailand) ASIA. Survivor Education Thailand
ECC seem to be an employer too, sorting out such things as work permits, though I hasten to add that I have no personal experience.