My last deal gave 15% ROI — now checking GLS Infra pre-launch prices.

My last deal gave 15% ROI in 2.5 years. Now eyeing a GLS Infra 3BHK in Chakkarpur, quoted ₹1.8 Cr. Pre-launch pricing feels high. Is it genuinely a better deal than waiting for open-market or spot discounts? What's your experience with pre-launch schemes versus later negotiation for investors in Gurugram?