Their cousins on the Thai side (mostly, themselves, Burmese who have fled the oppressive regime or poverty and are living in Thailand illegally) buy and resell the “exports” brought across the border in hand-pulled carts or carried on their heads.  The local police turn a blind eye, regarding this as an opportunity for these poor people to earn a little desperately-needed money.  They are, of course, right - but the problem is that the Burmese jungles are again being depleted of their wealth and biodiversity due to the demands of wealthier people in neighboring countries.