The real estate prices in Thailand depend on its condition, novelty and location. Most expensive is a square meter in the capital, Bangkok, which is between 4,000 and 5,000 euros.
In the popular resorts of Phuket and Pattaya the cost of a square is lower by 10-20%. For inexpensive real estate in Thailand you should consider small towns such as Chingray and Krabi, where a square meter costs no more than 1500 euros.