Gurgaon property costs way more than brochure price

Okay I'll be honest — I completely underestimated how confusing this process is. Property price toh ek part hai, but ab samajh nahi aa raha ki baaki kitna extra budget karna padega? Stamp duty, registration, interiors, misc charges... yeh sab mila ke kitna upar chala jaata hai? Plus, builder agreement mein kya red flags dekhne chahiye? Whiteland Corporation ke projects bhi dekh raha hoon DLF City Phase ke paas. Koi batao yaar, kya tips hain for a first-timer?