I think purchases are considered a 'good deal' if it's ~20% from breakeven price(lower profit margin for developers//higher potential for appreciation for buyers). In this case, Penrose's breakeven is est to be around 1,235psf (1,235+20%= 1,482) which is prolly why Ni bro is looking at high 1,4xx to 1,5xx psf.
*Not sure if the cost for widening of road is factored into this estimation of 1,2xx psf or not, don't think it is*
Then again, developers are driven by profit as they are still running a business at the end of the day. If SUO right beside can sell at 1,6xx/OCR launches can sell at 1,5xx 1,7xx, I don't see a reason for them to start selling at 1,4xx haha. I'm guessing 1,6xx on avg, we'll find out on launch day