Hidden costs buyers only discover after possession

Just moved into my new 2BHK in Duhai, TGB Group ka flat, and honestly, the final bill was a shocker. Possession ke time itne saare hidden charges nikle, yaar. Maintenance deposit, utility connection fees, aur club membership ke naam pe kaafi paisa maanga. Builder ne pehle bataya bhi nahi tha, bas final stage pe add kar diya. Mera 40L ka budget tha, but all-in cost bohot upar chala gaya. Kya ye sab normal hai Ghaziabad mein? Kisi aur ke saath bhi aisa hua hai? Next time ke liye kya dhyan rakhna chahiye?