On ebay.com, Keysight's Terms of Sale state under Sales & Delivery:
Keysight products are designed, manufactured, and tested for professional and industrial use. They are not designed or tested for use by Consumers. While we thank you for your interest in our products, we are unable to supply them to you.
I also saw this under General:
The United Nations Convention on Contracts for the International Sale of Goods will not apply to these Terms.
I don't know what this implies, but it certainly looks interesting!
I realize that there is a significant professional presence on eevblog, but if Keysight isn't willing to sell to hobbyists, they should not be allowed to advertise or post messages here. Of course, eevblog is a benevolent dictatorship rather than a democracy, but that's my two cents worth.
Ed