This looks to be a mid-to-late-80s scope. I used a few from this series in some test rack builds oh-so-long ago. For the time they were slicker than snot, but I never met an HP scope that I liked for very long. My biggest complaint, and these are no exception, is that the trigger circuitry could never come close to Tektronix. I've had HP scopes miss transients that a Tek scope would reliably trigger on.
Compared to a modern scope in the same price range it is bigger, heavier, monochrome, probably more accurate if recently calibrated. I would consider both non-repairable. You might replace a fried resistor in the HP; other than that you are getting into exotic or obsolete parts.
Commodity digital scopes were pretty new back then and there was a lot of learning going on at both HP and Tek. HP was out-innovating Tek on the UI while Tek (IMHO) built better scopes and I loved -- still do -- all those knobs. The 54xxx series was meant to be a Tek killer and did on production lines, but as I said, they didn't get much love in the labs.
When I first started using these it was because we could connect them to a computer and do analysis that we used to do on paper and pencil, not to mention get rid of the scope camera which was a constant source of security violations for the techs (and me). We were able to knock down test time by over an hour per unit with these things and I got some relief from checking the tech's math in the test reports. The interface, if included, will be HPIB (IEEE-488) which will probably be useless to you unless you can pick up a card from NI, if they still make them, and if you do go down that road, do not expect a virtual interface to pop up in your browser. No SD slot or Bluetooth or USB.
If I am right as to its age, I think it's overpriced and you could do a lot better for the money with a new Rigol or an early-mid 00's Tek (24xx series scopes are good and in your price range). There's another thread somewhere dealing with them; models 2445 or 2465, if you want to hunt for it.