Need one song to be mix and mastered

I have just made a song and I’m looking for someone to mix and master. How do you guys work and what will be the cost? I want to release my track as soon as possible Kindly reply me asap, looking forward

Additional info:
The song has somewhere between 10 and 30 tracks recorded that need mixing. I need the mixer to do some editing, time aligning and vocal tuning before mixing. I'll need you to master it too if possible. I'm interested in working with a very experienced mixer.