I don't understand why people would purchase at $750 psf unless buying with cash.
If they're charging $750 psf a 500 square foot 1 bedroom costs $375,000. With 25% deposit you would have to carry 281,250 once the building is registered.
That's about $1500 a month.
Add on about 250-300 per month for maintenance and 180 a month for taxes and the total is pushing $2000 a month.
Would a 1 bedroom rental be able to pull in 2000 a month 4 years from now?
Its very risky to speculate on capital appreciation right now, but if your doing it I hope it works out.