Noida Extension pre-launch: Is the 'discount' real?

Sector 22-D — been looking here, aur pre-launch offers kaafi tempting lag rahe. Fed up of renting, yaar. Landlord ne phir rent badha diya. Nimbus Realty jaise builders ka pre-launch discount sach mein worth it hai kya? Ya bas early bird ke naam pe money block ho jayega? Worried about project delays and hidden costs later. Should I take the plunge for a 2BHK now at a 'lower' price, or wait for RTM properties? Kya bolte ho, community? Is it really a good deal?