Salarpuria Sattva: What I wish I knew about hidden charges

Did anyone else get blindsided by the 'super area' calculations at possession time? Just moved into my Salarpuria Sattva flat near Secunderabad last month. Brochure mein kuch aur tha, carpet area kuch aur nikla, effective rate ₹8500/sqft ho gaya! Builder ne maintenance deposit, utility setup charge sab add kar diya. Is this normal ya I got played?