the situation, the seller gives u price $20 (+/-Rp. 180.000, 1
USD = +/-Rp. 9.000)
Seller : $ 20, cannot bargain n blah blah blah..
Ratty : huh ? mahal amat. nggak mau ah. kasih $5 (+/- Rp. 45.000),
baru gue beli. (huh ? very expensive. dun want. $5, then i'll
buy)
S : nggak bisa, barang bagus nih. $17, mau gak ? (cannot leh, it's
a good stuff. $17, u want anot ?)
R : nggak deh. nggak usah (no lah..dun want).. then /walk
away..
later on he'll call u back..
S : $15, mau nggak ?
/keep walking away..
S : $12
/still walking away n getting further..
S : $ 7..mau gak, wooiii !!!
/turn ard. and still bargain for $6.
hehe..dunno if this work. it does for me sometimes.. 
well..bon voyage, Ratty ! Hv fun n get tanned ! 