Complex sentence: Siam Area is different from Ratchaprasong district because most of the stores in the area are more local and less expensive, which makes it a destination for Thai teenagers and middle class buyers as well as upper class Thais.
Split into simpler sentences: Siam Area is different from Ratchaprasong district because most of the stores in the area are more local and less expensive. This makes it a destination for Thai teenagers and middle class buyers, as well as upper class Thais.