I struggle with it too - I spend over $1000 per month just in Starbucks! But it is perfectly possible to eat a 3 course meal in a local place for less than $60. It's not haute cuisine but it is sufficient to live off. But even so, I still struggle to see how you come in at under $2000 per month which is the modal value in the survey so far. I spend more than that on wine!
Toast at breakfast: HKD3