I've got a Hameg 1003-4 scope here although I don't really use it. I salvaged it from the skip at work during a brief moment of compassion. It was bought for a specific task at work, used a few times then was unused a few years before it went in the skip. So like yours it appears as new and has probably only been powered on a handful of times in its life.
The good points are that it has 100MHz bandwidth, it is small and light and it has onscreen cursors and text and you can control it remotely via RS-232 and I think it has the classic Hameg component tester built in so you can look at caps, diodes and transistors in XY mode.
The bad points are that the CRT trace quality suffers a bit when the onscreen text/cursor mode is used. Turning the text off really isn't much of an option because if you look closely at the front panel, the timebase and vertical controls don't have scaling numbers next to them. This is a by product of the remote control capability. These controls are just rotary optical encoders with no V/div or ms/div markings. You absolutely have to have the onscreen text/cursors or you can't tell what the scope settings are (unless you are controlling it remotely of course)
Also, the various front panel controls have strange operation with shared modes on a push switch so it isn't an intuitive scope to use for a beginner. Some people will like it (especially because it is so small and light) but I don't like it at all. If I were you I'd forget the Hameg scope unless it was really cheap. I got this one for free but I think it was quite expensive when new and probably has a decent resale value because of the remote control feature. Some companies will be using these scopes with ATE software so I guess they will pay a decent price for one if they need one for production support.
Should you buy one? Only if you are really desperate for a 100MHz analogue scope and there are no other choices. Otherwise, I'll quote Father Ted...
"Run Dougal... run quite fast!"