Are Greater Noida's hidden charges making budgets irrelevant?

Chi III – I'm seeing some decent 2BHKs around Krishna Vatika Society. My kids have moved out, so we're selling our big house and want something manageable, maybe a 2BHK or small 3BHK, budgeting around ₹80L-₹1Cr. Okay, I'll say what no one says: everyone focuses on the base price, but nobody truly talks about the hidden charges that sneak up. Builders quote one thing, then you're hit with stamp duty, registration, PLC, OC, IFMS, club membership, parking, even power backup. It's endless! I'm honestly not sure what the *true* all-in cost will be. Does this add 15-20% easily, pushing a ₹1Cr flat to ₹1.2Cr? It makes my budget look silly. What’s the best way to get a clear, final figure upfront before booking? Change my mind.