I need a melody

I need a melody that would fit my favourite label melody standard. How much it will cost?

Additional info:
The song has less than 10 tracks recorded that need mixing. I'm hoping to find a good mixer that can work with my limited budget. I don't have a hard deadline for this. The tracks are cleaned, tuned, and and the song is ready to be mixed. I don't need the song mastered. . I'm an artist signed to a medium or large label.