Tech Data
Only this one had public product listings for large displays, and they were all 1080p (hoping for 4k, don't need QLED or OLED). That can maybe work, but I'd need to login to see prices, which is kind of annoying.
I'll ask around though. My company has several large screens, so I can probably ask where we get them from. However, they're often for conference rooms, so I'm guessing they're pretty expensive since they integrate with other expensive conferencing equipment.