There's a site I may start up that will require a good deal of development. It's based in Drupal, but will need to be modified pretty extensively.
I'm basing the idea of the site on another existing site in a completely different niche. The site makes money through sponsored listings and banner ads, and I've been tracking all of those, so I have a pretty firm handle on how much the site grosses.
I'm not in a position now to pay the developer, and he understands that. He's interested in getting a share of the business. What I don't know is how much of a share to offer.
Any ideas as to how to come up with a percentage?
Thanks for any replies.