Gurgaon builders hide true 3BHK costs

Visited a couple of projects on Dwarka Expressway last weekend, M3M and Godrej. I'm currently in a 2BHK in Sector 50, thinking of upgrading to a 3BHK. But yaar, the prices... They quote ₹2.5 Cr for a 3BHK, but then all these extra charges start popping up. Stamp duty, registration, PLC, parking... and then maintenance deposit, club membership. Is it just me or do builders hide so much? Like, when does the OC come into play for charges? I heard pre-launch prices are better, but then they add all sorts of charges later. Is it truly a discount ya fir bas marketing hype? Matlab, what's the *real* all-in cost for something like a 3BHK on SPR, say around ₹3 Cr? Not sure if the price jump is even worth it for these hidden costs.