What builders hide in Affordable Housing 3BHKs

Okay I'll be honest — I completely underestimated how confusing this process is. Currently in a 2BHK in Indirapuram, thinking of upgrading to a 3BHK in the Affordable Housing Projects corridor. My budget is around ₹80L-1.5Cr. But yaar, builders ke hidden charges aur misleading brochures se toh dimag kharab ho gaya hai. Ek project mein bola kuch, final quote mein PLC aur IFMS daal diye. Should I even consider this jump? Any real experiences with projects there for a 3BHK in this range?