Ghaziabad: What are the hidden costs in Premium Builders?

Buying into 'Premium Builders' has its own set of surprises, trust me. I just got possession of my 3BHK in a project near Crossings Republik a couple months back. Thought I'd done all my homework on quality and pricing, but man, there are things nobody tells you before you actually move in. Beyond the glossy brochures, what are the *real* hidden costs or ongoing maintenance nightmares people face here? I'm talking about stuff that isn't on paper. For those living in or near the 'Premium Builders' zone, any red flags to watch out for? Like, sudden PLC demands after booking, actual build quality issues post-handover, or maybe even unexpected OC delays that weren't obvious initially? Just want to compare notes and see if my experience is unique or if there's a pattern. What's your take on the ground reality?