Heard quality at serin is also bad.

Since you have presented no much info, the impression that I get is that you are put off by the word "20% discount".

You need to go dig further into the history of the pricing before we are convinced that it is a genuine 20% discount.

Cool. Since this is a Serin thread, I would be more interested in the Serin pricing history and discounts. Zefer pricing also can post lar, since it's the same developer and it will reveal how they do pricing/discount. But personally I am not interested in jalan pipit. Kekeke.

Sou desuka, that's for high built up units.

30% discount probably is the "gain" over the initial launching price. Maybe they just offer the same price as initial launching price.

Haven't considered the view/floor aspects yet, at a gross level, 30% off appear to be a good buy - for own stay.