Lucrative is not a word that most people use in their everyday lives, though most are aware of the word. I think this is what holds the value of the domain name way back...
Just as an example NameBio only reports one sale with the word lucrative, all time.
Tough word "lucrative". Low search. Maybe a good affiliate vendor site? By itself, I agree with estibot range at around $400 to right person. Good luck with the name. Cheers