Lowkoon Only 4 items in the house could consume that much electricity
Aircons , water heaters, fridge stove / hob
What is your usual electric bill for July Aug ? 5000 per month is not uncommon but it is if you weren't there . So did the maid help herself to the aircon etc whilst you were away ?
Do you have a fridge that runs constantly ? Do you leave the aircons on whilst away?
If you feel it's excessive ask the power corp to install a new meter for you
As for milk and nappies don't give your kids any milk they will poop less hence the requirement for fewer nappies big cost saving Just thank your lucky stars you don't need formula that runs 380 and up for a small tin
Of course you could always buy the mainland milk it's much cheaper and comes with all the additional additives like vitamins and melamine etc
Mainland vegetables are also much cheaper than imported ones and again have a good coating of chemicals most of which would require a NOTOC if air freighted
Okay joking aside
you are right the cost of living in HK is spiraling
Electric 3500-5000 per month in summer
Car initial outlay 250,000 - 2 million
Insurance and road tax 20,000 pa and up
Parking average 25 -35 per hour
Petrol 16 L
Restaurants 2 people average 800 - 2000 and up
Cheese 45 - 68/ 100 gms
Butter 40 - 65 for 250- 500gms
Imported cauliflower small 65 - 85
Leeks per piece 22 - 38
Biscuits 25 - 60 about double UK prices
Oranges 3 for 18
Mushrooms button 3 pcs 35 - 50 dependent on size
Watsons Drinking water 80 for 18 L
Household insurance after no claims 8000pa
Magazines 65- 80
Books are expensive
Small steak 150 plus
Imported Fish is expensive you can eat the local stuff if you dare
Household cleaning products are more expensive than overseas
Dishwashing machine soap 85 for 1 kg 32 for 4kg overseas