Not sure how much the cost is, because all my relatives'
funerals have been Catholic or Protestant. (I'm a convert to
Buddhism) But if you have a temple that you go to in Singapore then
you won't have to pay a huge sum for monks/nuns to do the chanting
for you. But i think 10k is a minimum to say the least, including
all the food catering, coffin, ang baos etc etc... But, there's no
need to buy paper paranerphelia (kim chua) nor wear sack cloth etc;
a Buddhist funeral can be dignified yet simple. I think there are
some websites on how to conduct a Buddhist funeral on the Internet,
maybe you can do a search?