Hidden charges in Bengaluru projects are a real headache, not just small print.

Kids have moved out, so we're selling our big house near JP Nagar. Looking for a manageable 2BHK, maybe around Prithvi Layout area. NVT QualityLifeStyle Pvt Ltd ka ek project dekh rahe the. Builder ne toh ek figure diya, but I'm worried about all the extra kharcha that comes later. PLC, floor rise, society maintenance deposit... yeh sab kitna add ho jaata hai? Aur negotiation kitna possible hai? Can we actually bargain much, ya builders don't budge anymore? Has anyone bought recently and found any major hidden costs at possession? Share your experience please.