Some basic research finds the following prices. Quite different from those quoted.
LW
For a family of 4, here are some rough estimates of the major expenses you are likely to incur on a per month basis while living in Singapore. The costs given here are on the high side and you can probably save quite a bit if you're thrifty:
Housing
Average monthly rent of a condo apartment in the city: $4000
for an apartment of size 1600 sqft (3+1 bedrooms)
Average rent of an apartment in the outskirts: $2500 for size 1500 -
1800 sqft (3+1).
Note: The cost of housing of course depends not just on location but on how old the apartment is, the facilities available (eg pool, gym) and the quality of the furnishing that comes with the apartment.
Transport
For one month for daily taxi fare to and fro office: $400
Note: If you take the MRT, it should cost you no more than $60-$70 a month
Education
School fees for international school for one month for one student: $600-800
Food
Food for family of 4: $800 a month (eat in + groceries)
Utilities
Water, electricity, gas etc: $250-$280 a month (if you leave the airconditioning running)
Entertainment
Going out, eating out: $500 - $800 a month
Note: If you eat at a food court or hawker centre, you'll spend no more than $25 each meal for a family of 4.
Others
Magazines, newspapers, cable TV, internet, books, phone charges - $400 a
month
Luxuries
Car: anything from $90,000 and above for a brand new Japanese or European family car
Club membership - $1500 to $4000 per year for annual non-transferable
membership
Basics
A can of coke: $1.00
Big Mac: $3.00
Cigarettes (20): $5.80
Bottle of wine: At least $60 for something decent, more if you order one at a restaurant
Loaf of bread: $1.50
Starbucks drink: $4.00
Pint of Haagen Daz ice cream: $10.30
Movie ticket: $7
One hour at an internet cafe: $6
Miscellaneous
Mobile phone: $400 + about $30 a month for subscription
Home computer: $1500
Laptop: $3500
DVD player: $700
Music CD: $20
HiFi set: $350
TV set: $800
Not covered here
Insurance and medical expenses, as these depend on your company policy and insurance coverage.