I need my single mixed and mastered.

I need the single from my upcoming Album mixed and mastered. Can you help and if so how much do you charge?

Additional info:
I'm interested in working with a very experienced mixer. I need the mixer to do some editing, time aligning and vocal tuning before mixing. I'm an indie artist. I'll need you to master it too if possible. The song has somewhere between 10 and 30 tracks recorded that need mixing. . I need it by 31 March, 2023.