My Dwarka 3BHK, suddenly ₹5L extra

Hidden charges at possession are a scam. I'm eyeing a 3BHK in Dwarka, and the builder suddenly added like ₹5L for 'infrastructure development charges'. Matlab, yeh sab pehle kahan tha? My budget was already tight at ₹2.2Cr. Is this normal for builders like Godrej or Tata Housing? Kya karun ab?