Need a song mixed and mastered

I've song finished a track soon that I'm very exited to release. It's an EDM track with a bridge with a big atmospheric sound to it. How much for mixing and mastering? Hope to hear from you soon

Additional info:
. The tracks are cleaned, tuned, and and the song is ready to be mixed. I don't have a hard deadline for this. The song has over 50 tracks recorded that need mixing. I'll need you to master it too if possible. I'm interested in working with a very experienced mixer.