already answered - this is a pool, not an e-wallet, however you can change your address to an exchange with low withdrawal fee and sum there small payments and then send to your main wallet.
4 hours to pay, each 0.015btc. Pay 6 times a day. Each spend 0.006~0.008btc for mining fee.
Receive in total 0.015*6=0.09btc and use 0.006~0.008btc*6=0.036~0.048btc mining fee to transaction.
So the fee≈30%-40%?
Someone to explain it?