crwjerk
Your figures are a little misleading. Most people joining the cadet scheme now will not have any experience with property in hong kong.
The way it works here and I am sure what the figures above are based on is incorrect to determine the size of a place. The actual area you get is not as large as in the adds as they include maybe some or all of the following, lift and lobby area split between units, huge windowsills as are common in hong kong, the walls, yes the thickness of the walls, outside ledges, balconies, etc.
The best you can hope to get is about 80%, so the 515sq/ft place listed above will be at most about 400sq/feet, think about it for a second, in fact better still measure out a 10 foot by 40 foot rectangle. Then imagine putting a bed into that square, a washing machine, fridge, kitchen, table, wardrobe, toilet, shower, wash basin, tv, book case, chest of drawers, maybe can still squeeze in a small sofa.
This is the reality of living in Hong Kong whilst trying to live in a cheap place in an area that is pleasant (for an expat). You have to buy a thin tv and most hotel rooms you stay in with work are bigger than your flat.
Not trying to put guys off as think it is an excellent scheme for a young, single, guy/girl who has little or no experience. If however you are married, have kids, think very carefully about what you are doing. A LOT of marriages break up at CX because the partner does not like HKG, this is whilst they are living in a really nice place with disposable income.