Needed: Knowledge on Ghost Writing/Royalty Splits

[Fire Marshall Bill]

Hi everyone-

I've been approached to ghost write a book and have zero knowledge of typical royalty splits. I'd like something on the back end, but need some advice on what is customary.

As the contract is written now (which I'm hoping to change), I'll get nothing outside of my hourly writing rate and also no name credit on the front cover.

Just needed a little bit of ammo for my negotiations from someone who has been there before.

Thanks in advance.