It was the coolest computer that we never sold and for one trivial reason. The video port used a non-standard 23 pin connector, and while we had lots of Amigas and monitors, for months the store had no cable to connect the two.
Someone finally had the idea to take a standard 25-in parallel port connector and use a hack saw to remove the extra two pins. Problem solved!
Seems like the donations are (partly) used to allow the site maintainer to increase his personal Amiga collection.
"All donations are exclusively used for the up-keep of the site or shipment of donated hardware."
"If you want to donate hardware to BigBookOfAmigaHardware.com I will pay shipment for the donated hardware."
And then donators get a special "reward" of receiving PDF scans of some documents that they want to keep secret. They are essentially selling these PDFs.
"The package contains scans (exclusive to BBoAH) of Commodore documents which until now (for the most part) hasn't been available before as PDF files."
I hate this aspect of Amiga ecosystem.