It is a good price if the condition is good but the hackable Rigol is $585.00 (426.48€) so less than one third of that. I guess look at the manuals and see if the extra 1000€ account for the MSO part of it (16 digital channels) and the higher bandwidth.
It's a good deal if it's in good condition but it all sums up, what do you need for the next years to come until you decide to get another one.
If it was me and didn't have a couple of scopes already I would be all over it, but I would still hackle a little to get it under that price.
So again, it all depends what you need/want.
Good deal, yes, do you need it? you are the only person that can answer that.