Not sure if interested, but may be useful to have lying around for maintenance and testing.
Under the following title on eBay is a fairly good USB-powered converter that lets you use any HDMI monitor with the composite output on the Amiga. I won't post a link as it'll decay like all the others, you can just search for it
Composite AV CVBS RCA to HDMI Video Converter Adapter 720/1080p Upscale White TR
Screenshots attached don't show the flicker on interlace but do exaggerate slightly wavy "moire" effect on detailed images, but for £6 it's pretty good, especially if you're doing some config work and need to flick between monitor profiles and PAL resolutions for a while, or playing games that only work on normal modes. Didn't test whether sound passes through okay as monitor has no speakers