Be careful,
Sometimes estibot values to 0$ a domain and could be sold for 20.000$ to the correct end user. The way I take is when a domain is reaching from 4.000$ I take a look what is going on and then I decide. If I valuate a name and estibot says 0$ I don’t care, if I have good vibes or positive sense about the domain I purchased I buy it.
I had to lose money on this first year as a domainer to get experience how the market is, and of course everyday namepros reading to get more and more experience and avoid in the future keep fishing junk domains.
Fortunately I get my money back with cashpsrking and selling a couple of names.
Continue learning...
Hope it helps.