How much discount for Pinnacles?

I went to the HDB website to troll for some figures on the much hyped discount given to Pinnacles at Duxton. There were some comparative figures on the average price of a resale flat in the same location. The average price of 4rm resale flats was $508k while the prices of 4rm Pinnacle flats are from $457k to $555k. Taking the average of the two, the average price of 4rm Pinnacle flats is $506k.