Comparing Automated Valuations

Hi guys. I’m new to domaining, and even newer to NamePros. I’m generally buying / registering new .com names that I come up with, and basing my sale pricing on some combination of valuations from Brandpa, Godaddy & Estibot. (Sometimes, the three couldn’t be anymore different!)

I read Bob’s excellent article, but that was written a few years ago. What are people doing now? I am the only domainer I know, and it would help to know whether or not I’m on the right track. I’ve been doing a ton of reading on domain trading, for whatever that’s worth. Thanks in advance!