i have long suspected that wealthy vietnamese are *stashing* their money in singapore.
this may also be the reason why money exchangers in sing always have ample supply of dong.
when usd is strong, dong is also strong so the urge to move money out of the country becomes higher. hence the demand for big denom sing dollars.
1 piece 1000 SGD note = 1 thick stack of 35 pieces 500k VND notes. hehe which one easier to bring along? =)

