I’ve listed some more H-8 items on eBay. A dual-drive H17, H17 controller board, and three different prototyping board options. I think this link will take you to my current listings (my eBay seller ID is ‘lewes413’). If you’re interested in buying, happy bidding otherwise enjoy the show…
https://www.ebay.com/sch/i.html?_fss=1&_saslop=1&_sasl=lewes413