Some thread their own(my friend use to sell them Bamboo pieces he hand-carved,painted ,etc-he sold them to many of the vendors in the craft market for them to make jewelry,etc out of) but yeah, you can buy wholesale too-not far from the craft market (round the corner) is where a a couple of wholesalers set up a tent, etc and sell things from Sav., kingston,etc wholesale to some of the vendors as well...They will gladly sell to toursits too..It's where you can get the stuff the cheapest but its also just mass-produced stuff from china, etc.(key chains,that kind of thing)...Nothing special that is hand-made from a local artisan...