Mixing

I recorded a Hiphop song in my bedroom studio using mostly sample audio. I have level my vocals and added a few effects to it. Should I submit it with the effects? I would like you to mix the song to give it the spark it needs. Feel free to make any changes to help the song shine. Hiphop/trap kind of feel. How much would it cost and how long is the turnaround? Any revisions included in the price?

Additional info:
The tracks are cleaned, tuned, and and the song is ready to be mixed. I'm an indie artist. The song has somewhere between 10 and 30 tracks recorded that need mixing. I don't have a hard deadline for this. I'm hoping to find a good mixer that can work with my limited budget. . I don't need the song mastered.