If someone know about that, because i could not find on Google related information.

i'm looking for language school near Pinklao area that costs about 15,000 - 20,000 for ED visa.

if there is no school like that there i don't mind little bit more far from Pinklao... if someone have name of school or site it will be very helpful because i want to start the visa process from my country and not from there.

Thanks

Wall Street English Schools have a place at Major Pinklao, see here:

http://www.wallstreetenglish.in.th/contact-us/pinklao-center/?lang=en

I have no idea about costs, or Ed visa, but I am sure that if you ring them, then they can clarify those points for you. Best of luck.