Reading all the comments, I think at the end of the day, everyone here is simply speculating on consumer sentiments. Ultimately, sentiments cannot always be rationalised. Why do people prefer new launches even with higher price tag? Why do some prefer staying punggol instead of more central locations? Nobody can really explain sometimes.
Yes, punggol property is unlikely to climb beyond those in central regions, but whether piermont will sell higher than now will depend on what happens to the economy in the next 7-8 years right? Again, one can only speculate what happens in the future.
Maybe some just want to stay in a younger town, now equipped with rather good amenities. Maybe they want a new property (not just on the interior but also the exterior), yet wouldnt want to spend their life savings on something much more expensive in a central location. Really, it takes only 30 min by public transport to get from any fringe areas to town in Singapore after all.
One thing at least I feel is a plus point for punggol, is how neat the town feels compared to many others. Despite more flats being built there, it still doesnt feel as cluttered as some other towns (e.g. tampines, clementi, jurong).
Just feel that everyone shouldnt be so absolute in their opinion here, just have to share a objective view and watch how the sales turn out.