I can't tell if your pointlessly flexing about going to Thailand or poorly wording your questions. Well I guess it's both.
I don't remember seeing mangosteen there. They could probably order them if you ask. Or you could go to 99 Ranch in Van Nuys which is a specialty Asian market and sometimes has them. Also bangluck thai market on reseda at Sherman way is a good bet.
I actually don't understand either. But if you were looking for mangoes gelsons does have mariani mangos which are dried mangos in a bag and they are from Thailand. Hope this helps.
Thanks! Your answer is awaiting moderation.