New Delhi property: Hidden charges after moving in, feeling blindsided

Just moved into my DPH Buildwell flat in Paschim Vihar last month, and kuch cheezein really surprised me. The actual all-in cost for my 3BHK went way beyond the initial quoted price. Stamp duty and registration toh pata tha, but things like PLC for a higher floor, and mandatory club membership fees, were quite high. Honestly, nobody tells you about these until possession. Did anyone else face so many hidden charges in Delhi? How did you guys manage to factor them in? Feeling like I missed something big.