Well I just like it. I like how the front panel has ridges on the front, gives it some personality. I like that it's a horizontal AT. I like that it has a special case-top opening mechanism that allows you to push in two points and flip the top up without having to pull out a screwdriver. I like the patterns in the plastic lines..
It's mostly just that it's aesthetically pleasing to me - most horizontal AT desktop cases are either very boring and generic, or proprietary and/or strongly branded. I'd like to find a horizontal desktop case to build a machine into that won't say "Packard Bell" or anything like that, will be standard-AT, and look aesthetically pleasing to me.
I can't repair this case because it's broken in places that are meant to come apart to open the case - little clips and such - and it would either be permanently sealed (unacceptable, I toy with my hardware constantly) or easily re-broken.
I just thought that perhaps someone had one of this particular case sitting around in their collection (some clone cases were very widespread and common) and most people don't care about a clone case, so I figured they'd sell it if asked.
Edit: Oh, and also a plus is that this case is pretty small. While I find the IBM 5150/60/61 case very nice looking, it's a hulking monster by comparison to this case. I'd also accept smaller cases than this - three 5.25" bays aren't necessary. I could live with two, or even one, if it means a smaller case.
So if anybody has another case to recommend or sell to me, fire away w/ some pics, and perhaps you'll have one I like - just make sure it's relatively small.