HELP - Anyone Tried HumbleWorth Free Domain Valuation?

I know I should have posted this in the "Ask a Question" area above. However, you can't post images there and I need you all to see my questions. LOL

HOW MUCH IS MY DOMAIN NAME WORTH?

I bought several domain names about 10 years ago. Some were going to be websites and some will be in the near future. I am in the process of selling one of my old domain names to someone interested in its catchy name. His offer definitely covers my cost of it for 10 years, times three.

So I got to thinking. Is there a free online tool to give me an estimate of what my domain names would be worth? I found a site called HumbleWorth.com and I first want to know if anyone else has used it for getting an idea of what a domain name is worth? Here's what it looks like.

I started searching the estimated values of all of my domain names. Below is an image from the results of a domain name I searched using HumbleWorth. This domain is my friend's website I built for him here at WA. Obviously and as expected, it doesn't look like it's worth anything.

Then I searched for another catchy domain name I have and received the below results. I was shocked to see $1,480 Marketplace Value and $5,220 Brokered Sale Value. Can I assume that this domain name of mine is worth selling? I understand Marketplace, but what is Brokered?

This is one of the few extra domain names that I am looking to sell. I purchased it from NameCheap and that's where it is sitting. I have a couple other domain names that are around $62 Marketplace and $290 Brokered, but I am not looking to sell those any time soon.

Just to Recap... Has anyone used HumbleWorth for pricing the resale of your domain names or even for Domain Flipping? Do the estimates seem accurate enough? And what is Brokered Sale Value? I'm interested to know what all of you think. Leave your comments below.