RS GROUP pre-launch in Ghaziabad: My real doubts

My current 2BHK lease in Indirapuram ends in a few months, and I'm seriously looking to upgrade to a 3BHK. Budget around ₹90L-₹1Cr. Recently saw some pre-launch offers from builders like RS GROUP near Siddhartha Vihar. They're pushing 'early bird discounts' but honestly, not sure if yeh genuine discount hai ya bas hype. Is it really worth locking in funds so early, especially with my existing home loan? With Delhi-Meerut Expressway, prices toh waise bhi badh rahe hain. Has anyone else gone for pre-launch in Ghaziabad? Kya experience raha?