I need male and female vocalists

I need vocals for great dance tracks i have already written. there are a few different tracks. how much do you charge for singing pre-written songs please? I don't have a huge budget but they're gonna be hits. thanks, tim

Additional info:
I don't need to use your name - you can be uncredited. I don't have a hard deadline for this. . I'm looking for a female singer. The song will be released commercially. The lyrics and melody are already written. I just need a singer.. I'm hoping to find a good singer who can work with my limited budget. I'm an indie artist. The song has less than 10 tracks recorded that need mixing.