Oh that guy. I was wondering when I saw your post. He collected all that, all from the same place, because he thought it'd be cool, and now doesn't want it, and selling all of it at once for around $100 bucks on average for each item. I warned people the way things were being done that it was attracting people that didn't really know what to do with it, but were just taking whatever they could fit. At least the last bit of the stuff at the warehouse went to a real computer rehabilitator. Finally...
If you do put together a collection and decide to be rid of it because times change, I fear the situation will frequently be, "I just want it gone together", and that will frequently be a hard sell, because how many museums and recyclers, or other people that have any memory of some of this stuff are there going to be in a few years? Then whoever has to handle the estate has to dump it quickly and will not hold your viewpoint, leading to more rare things disappearing. At least consider the consequence of holding onto a large range of vintage PCs, and have a plan 😉