there are only 2 reasons 'got so many rebates'

1. to entice investors or buyers with little cash on hand to tight them down with even bigger loan commitment.
2. they priced it too high therefore need to give rebates to bring down the price.

Lembah Beringin ? already knew cannot flyla  during Mahathir Time, as too far from Klang Valley, include Bukit Beruntung, now Bukit Berugi