This is a four day course in Thai cooking in Chang Mai.They provide the transportation to and from town. That would leave 8-10 days in Bangkok. Or more time in Chang Mai for other cooking schools. The reviews look good, the facilities look inviting, and it is, after all, in Thailand.
4 days of cooking lessons cost ~$30/day.
Then there is a fancy one:
The Cooking Class
Enjoy 5-Star luxury accommodation, professional Thai cooking lessons and culinary field trips to top restaurants.
that is way expensive.~$2500, not counting airfare.
I have done other posts about Thailand. Check out the page that deals with other Chang Mai schools.
ticket cost ... ase-bkk-ase $1832
bkk-cnx-bkk $135