At least once in your lifetime (assuming your are a man) your should have a straight razor shave from a skilled barber. The best deal you will get is in Turkey.
While in the rest of Europe it is quite expensive or out of use, in Turkey it is still very in common practice to get a shave done. So the barbers are very skilled, it is cheap, they have fun when you come in as a tourist, you will learn techniques for your own shaves and you even get a glass of tee (chai) for free as well.
While India is also a very “interesting” option, I can not recommend Thailand. It seems to me that they are not used to our dense hair, so cuts, blood and skin irritation is mostly guaranteed.