Assessed value is often very different from the actual/sale value of a home because it refers to the value that the home is taxed on and is subject to all sorts of limits depending on where the home is and which laws it’s subject to. For example in some states assessed value can’t increase above a few percent a year unless the home is rebuilt.

It doesn’t quite all show up the feed no matter what instance someone is on. In order for content to federate on an instance someone on that instance has to directly access it. I think this is why small niche instances appear to have a trickle of content on “all”.