Do our pay get deducted from the sending fee

I noticed that we need to pay a small amount for transfer fee whenever we want to make a withdraw

I really don't see how 6 cents will harm you in any way.. (.0002 BTC)
Think of it as speedy delivery. You pay six cents to get your money faster. If you don't pay, you'll have to wait days to get your money or hell, you might not even get it.