dashingriddler thanks for much explanation but still did not got answer to my query.
How come their script showing incorrect rates? Did it not synchronize with exchange rate?

Why do fool us like this and show that they are charging 1% and 3% fees. Instead they should show correct exchange rate and no matter they clear charge 5% or 10% for their risk.

However in USD that whatever the exhange rate is on xe or money control we buy/sell it on difference 50 paise

It means the site unocoin put their own rate for bitcion and + fees.

Then the better place will be like localbitcion where buyer sell meets personal and pay them fees of 1% or whatever.