My possession in Sector 70A — the real cost story

My possession was in March, and honestly, the total cost difference from what I was told initially is mind-boggling. Sampada Group ne starting mein jo quote diya tha, final bill mein bahut extra charges the. Kya pre-launch pricing sach mein sasta hota hai, ya just marketing hype? All-in cost mein kitna upar neeche hota hai usually?