Noida property owners — what's your biggest regret?

**The hidden charges at possession are insane, right?** I'm selling my big house now that the kids have moved out and looking at smaller 2BHK flats. My lawyer said to watch out for extra costs, but honestly, the PLC and other charges are a shock. Supertech quoted one price, but it's ballooning now. Anyone else felt totally blindsided? Should I push back harder or is this just how it is? What did you do?