If you've got a proven system that can really pull 5figures per month, and if you are ready to offer a solid money back guaranty, you might be able to sell it to a smaller group for a high rate, like $1000 or even more.
I wouldn't mind paying $5000 or $10'000 or even more for a system that can make me at least $10'000 in the first month, but I wouldn't invest so much if I'm not given a really trustworthy guaranty. I guess every of your potential customer have that kind of mind set