Need a singer for my song

I need a singer for my song, I've already worked on it with my songwriter and now it just needs to be sung. I would therefore only need the vocal with any harmonizations, doubles, fx and adlibs both in Dry and Wet. Could you tell me how much is the price of the singer service and the timing. In case I'll send you all the vocal solo in detail, so that you can better understand how to move better during the recording.

Additional info:
I need all the vocals recorded (lead vocals, harmonies, stacks, ad libs).