My Gurgaon possession bill: Was this much extra normal?

The final payment at possession time is where builders sneak in so much, it's crazy. Just moved into my Emaar flat near Golf Course Ext Road last month. My 'extra' charges for PLC, EDC, maintenance deposit almost gave me a heart attack. Builders like DLF and M3M bhi aise hi karte hain kya? What was your actual experience, especially with the OC part and unexpected costs?