What they don't tell you about final costs in Gurugram

Hidden charges in Gurugram, especially at possession, are a total scam, I swear. Hum apna bada ghar bech kar Sector 83 mein ek 2BHK dekh rahe the GLS Infra ka, socha kids bhi settled hain, chhota convenient flat theek rahega. But ab final payment ke time OC, utility charges, random 'club membership' fees... matlab, yeh sab pehle kyun nahi batate? Had hai yaar. Kya sab builders aise hi karte hain? Is there any way to fight these surprise costs, ya bas pay karna padta hai?