Yes, automated appraisal tools are worthless. You need to learn what makes a domain valuable, and no tool can teach you that.
An appraisal, even from an educated and experienced domainer, is always a best-case scenario anyway. Do your homework. Look at reported sales, and see what kinds of names do sell, in which TLDs.
Sorry, domaining is much more difficult than just punching domain names into a blackbox.
If domaining was that easy - everybody would be doing it.
Some of these names would have some value to some if you were to own:
Muscl.es
Accessori.es
Degre.es
Satellit.es
(Notice that they make an actual English word with the ccTLD and dropping a letter or two from the end, these are called domain hacks)
Disagree with this. It is still an English keyword on a ccTLD, which is terrible for SEO. The only time this is not true is when using vanity extensions like .me/.co that are treated like gTLD's. Well, actually since they're domain hacks it's not even seen as a keyword it's purely registered for branding purposes, but the examples above are worthless all the same.
*the exceptional businesses of our esteemed moderators