I don't do them - sorry
I've never seen a sponsored post "expertly written to match your criteria and house style" that didn't look and smell like a sponsored post, and no self-respecting publisher would publish one without transparently declaring it as such and emasculating any link with a 'nofollow'. So what's the point?
BTW: I don't even bother to respond to enquiries about commercial 'guest posts' aka "free content". Thinking I'll publish your junk for free is just insulting.