Do you you have the software? The hardware and it's age aside, without the software to operate it I'd say it's worthless junk.

Yes I got a floppy disk and a manual the floppy has 2 exe files and a readme but the exe files are only 35KB and 36KB so whatever the exe files do they are not very big.

Edit: I ran both the exe files in Dosbox and they are working the same as it is in the manual.

Would there be any interest in selling it as its complete? I havent seen any like this in google searches so should I sell it for a medium price like $90 AU or what?

These things are useful only as complete set, with software and all required things. And even then they're not exactly great compared to the cheapest options available nowdays, clumsy software and limited device support being the main problems.

Considering it has 4 identical EPROM sockets and low serial number I'd say it was some sort of factory device used on an assembly line for burning BIOS ROMs and/or testing DRAM chips. Old tech, mid-'80 or very early '90. DOS was widely used then and even later it would not be an issue, since all the operator has to do is insert the chips and push a keyboard button, you don't need fancy GUI for that.

Even if I'm wrong, it can only handle 28-pin ROMs so only chips up to 64kB or so and only 5V ones. So it's of some use to someone who knows how to use it but frankly you can get a modern USB programmer with way more supported devices for what, 50$? As a tool this is worth much less, especially considering a working DOS machine with ISA slots would be hard to come by today, but perhaps some collector would pay for it.

As Deunan said, as a tool this is worthless. I know only one person insane enough to use eprom programmer manufactured in the 80s (curiousmarc), and he collects stuff from the 50-70s as a hobby 😀

the only useful thing you can do with this is upload software to archive.org for others, there are about ~10 people on the net looking for FAIRY YIH-LUNG YL 23 software over the last 10 years, for example https://sinclairzxworld.com/viewtopic.php?f=7 … start=20#p28003

I was able to help out someone at sinclairzxworld forum and I have posted the floppy files to archive.org so anyone else needing this can find it there, later I will do scans on the manual too and post them to archive.org as well .