Don't assume that automatic appraisals from sites like Sedo, Estibot, or (frankly) anybody else are accurate or meaningful. For individual domains, they're simply not.
Maybe a bakery could name itself Cakerz, but I'm not sure they will. And if they do, I'm not sure they'll be willing to pay more than $10 for it (in the form of an available registration).
I'd be skeptical even of Cakers.com with an "s". By the time the "z" is substituted, it's even farther from someone's likely first choice.