There are hundreds of stores in this way, you can find almost everything one can di with silk. People don't speak english but they can do deals: it was strange for me to ask for sizes, colours, shapes using fingers and binary logic (this yes, this no)!
My suggestion is to bargain: choose something, ask price (rubbing your thumb on index and middle fingers. They will write the price on paper), go away, return in a few minute, call the 'boss' and make your offer. My average deal has been 50% the price.
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