Noida Extension all-in cost: pre-launch a real deal?

Spent the whole Sunday checking out options in Sector 168. Highflown Buildcon Builders ka ek naya project dekha, base price ₹85L for a 3BHK, which sounds okay. But yaar, when you start adding everything – stamp duty, registration, PLC for a good view, parking charge – the 'all-in' cost shoots up like crazy. Builder bol raha pre-launch offer hai, but I'm not sure if that's genuinely a discount or just marketing hype. I've seen this pattern before, later stage pe bhi spot discounts mil jaate hain. Is it smarter to wait for RTM ya pre-launch mein hi lock kar dein? Trying to calculate the real ROI, aur ye hidden charges mess up the whole calculation. Koi batao what's the actual total cost of acquisition in Noida Extension for a property around ₹80-90L? Aur pre-launch mein kitna save ho jaata hai genuinely?