When checking past names of domain sales on dnpric.es & dnsaleprice.com then, are these lists of just solo domains sold? or they are a list of complete websites sold? (being the domain AND the website with content, links, income history etc ?
Those 2 sites report domain name sales history only. I checked namebio.com it also show domain names only sales.
DNPric.es also has an option to show deals with other assets (often those with websites but also sometimes companies behind). They also have an option to search for the deals with unmet reserves. P.S. forget dnsaleprice.com - it was not properly updated for years.