I have been to Thailand. At first, I went to Bangkok and its really smelly and dirty city with plenty of good markets, good food and nice people.
It will be a bonus for you if you go to Phuket, which is about 1 1/2 hour trip on the plane to there. Its really beautiful place called Patong to visit for drinks at bar, walking around in long street market. At anytime, if you want to buy something and you think its really expensive, and you can make it cheaper as you want. Its your choice to make because Thai workers always appreciate everything to make it small amount of it!
I love Thailand to death! But i don't know exactly everything because i went to Phuket before the tsunami wrecked in the town. I have heard that people say its still good at the moment and its still beautiful!