You might have wondered why not sell when the EC reach 10 years (fully privatised) at a better price?
Well, in terms of HDB regulations, the only difference between 5 or 10 years, is that you can’t sell it to a Foreigner at the 5 years mark.
However, looking at the current ABSD tax of 20% on Foreigners, the budget constraint ones most likely will not be able to afford. And for those that can afford will buy in downtown or the prime districts.
So in essence, your targeted buyers are locals and PR (permanent residents); you can even sell it to a single SPR now!