http://www2.jurock.com/articles/columnist.asp?id=9370
But in 2008, worldwide financial markets tanked and with it condo markets in Vancouver. By December 2008, some 200 presale unit owners were offering their contracts on Craigslist - often at a loss. (On March 20, 2012 there were just 39.) When that did not work, many simply did not complete the deal and lost their deposit. Some lost not only their deposit, but where the price of the unit had fallen they were sued by the developer for the difference (developers won in many cases).
Needless to say, developers once burned have now tightened up the contracts. Buyers must realize that developers get their financing on the basis of pre-sales and rightfully expect and deserve all pre-sales in their development to complete.
Also, you then have issues with insider buying/selling etc. It's just not worth the hassle for the developers.
http://globalnews.ca/news/2823397/vancouver-pre-sale-condo-m...