I have not ever bought a property from them but I got on their email list years ago. I got discouraged when they had a property I was interested in so I did my due diligence. I had a realtor pull the comps and compare it to their comps provided on the email. The comps they provided were cherry picked and only represented the higher sales. Also, their comps were not even in the same neighborhood. They used the comps from a higher value neighborhood in the area.
In case it was a fluke I tested their comps again on another house. Once again my realtor comps gave me all the comps in the immediate neighborhood but Networth comps were cherry picked and all over the place.
I guess its like any other possible deal though, you have to do your own due diligence. Usually when I buy I pay very little attention to the asking price. I figure out ARV minus all costs involved and that is what I can offer. If someone else will offer more then so be it.
Having said all of the above I will say that they were offering a house a couple of months ago in a neighborhood where I have two rentals so I know the values. Their asking price was in line with what it probably should have been as long as the repair estimate was accurate. I didn't check their comps though. Maybe its just hit or miss...I don't really know.