Notice he never said buy flat in what country. Or how many years you have to take to pay off the loan.
Sure, buy flat on a $1k salary a month. Just don't renovate, don't furnish, don't eat, don't turn on the lights, don't flush the toilet, don't even take a shit.
Maybe Tharman meant to say, if you make $1k a month, you can buy a flat… screen tv.
Youtube link: http://mrbrwn.co/xv7Ef6
Link to HDB page on the subsidy scheme.