i had young coconut frm siam... it cost $3.50 for 1! the thai ones seem cheaper. the difference is tha tthe thai ones do have some treatment to it. like roasting it to make the smell come out, etc... the siam one is no treatment - just pure coconut. but of coz, there are no treatment thai ones as well as treated siam ones. but generally the thai coconuts are treated while the siam ones are not. siam ones are hard to find...