How to find what is suitable transaction fee to send 10 mBTC?
Bitcoin Fees is a useful site to see the current network status and pending transaction fees. According to that site as of now, a transaction fee of 4.11 - 4.20 mBTC/KB is required to clear within 1-12 blocks (i.e. within around 2 hours), 4.61+ to clear as soon as possible.